@misc{MTMT:2092702,
	title = {Structural characteristic and permeability of ethylcellulode films containing different plasticizers},
	url = {https://m2.mtmt.hu/api/publication/2092702},
	author = {Fekete, R and Dredán, Judit and Zelkó, Romána and Antal, István and Rácz, István and Marton, Sylvia and Marosi, György},
	unique-id = {2092702},
	year = {2005},
	orcid-numbers = {Dredán, Judit/0000-0001-5278-8053; Zelkó, Romána/0000-0002-5419-9137; Antal, István/0000-0002-5434-201X; Marton, Sylvia/0000-0002-2419-3383; Marosi, György/0000-0002-4774-2023}
}

@article{MTMT:1487740,
	title = {Evaluation of drug liberation from "soft-patch" type gel systems by different mathematical models. Hatóanyagfelszabadulás értékelése különbözo matematikai módszerekkel új "soft-patch" típusú gélrendszerekbol},
	url = {https://m2.mtmt.hu/api/publication/1487740},
	author = {Csóka, G and Marton, Sylvia and Rácz, István},
	journal-iso = {ACTA PHARM HUNG},
	journal = {ACTA PHARMACEUTICA HUNGARICA},
	volume = {74},
	unique-id = {1487740},
	issn = {0001-6659},
	abstract = {Authors investigate "soft-patch" type transdermal delivery gel systems with NSAID (diclofenac-Na). The matrix systems containing 1% pharmacon in dissolved (stearate gel) and in suspended form (PEG and lipophilic gel). The in vitro dissolution test was performed according to USP TTS directives. The acidic skin wrap was simulated by buffer solution of pH=5.5, the liberated and dissolved fraction of drug was determined spectrophotometrically. The rate constants were calculated using different mathematical models (first order kinetics, Fick's law, Higuchi equation, modified Nernst equation /Rácz et al./, Hixon relationship). The aim of investigations was to determine the fit of equations to measurement results, namely in which situation is the rate constant independent of time. The comparison was based on RSD and R2 values. The modified Nernst equation (Rácz's relationship) passed the best on data in the case of all three gel systems, the calculated values were constant at any time point. The shape parameter value (a) confirmed the alterations in liberation processes. The less correlation was observed in the case of Hixon-Crowel equation.},
	keywords = {LIPOPHILICITY; PH; BUFFER; review; Spectrophotometry; suspension; drug delivery system; drug solubility; diclofenac; GEL; nonsteroid antiinflammatory agent; acidity; mathematical model; correlation coefficient; Drug release; stearic acid; transdermal patch; curve fitting; macrogol 4000; lard; adeps solidus 50},
	year = {2004},
	eissn = {1587-1495},
	pages = {102-106},
	orcid-numbers = {Marton, Sylvia/0000-0002-2419-3383}
}

@article{MTMT:1342861,
	title = {Szterin-tartalom hatása vezikuláris foszfolipid gélek szerkezetére},
	url = {https://m2.mtmt.hu/api/publication/1342861},
	author = {Farkas, E and Zelkó, Romána and Rácz, István and Antal, István},
	journal-iso = {ACTA PHARM HUNG},
	journal = {ACTA PHARMACEUTICA HUNGARICA},
	volume = {74},
	unique-id = {1342861},
	issn = {0001-6659},
	year = {2004},
	eissn = {1587-1495},
	pages = {118-122},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137; Antal, István/0000-0002-5434-201X}
}

@misc{MTMT:1348801,
	title = {Cukorészterek hatása bevont pelletek és szabadfilmek tulajdonságaira},
	url = {https://m2.mtmt.hu/api/publication/1348801},
	author = {Csóka, G and Odri, S and Zelkó, Romána and Dredán, Judit and Rácz, István and Marton, Sylvia},
	unique-id = {1348801},
	year = {2003},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137; Dredán, Judit/0000-0001-5278-8053; Marton, Sylvia/0000-0002-2419-3383}
}

@book{MTMT:1343125,
	title = {Középüzemi gyógyszertechnológiai műveletek és gyógyszerkészítési eljárások. Egyetemi jegyzet IV. éves gyógyszerészhallgatók részére},
	url = {https://m2.mtmt.hu/api/publication/1343125},
	author = {Marton, Sylvia and Rácz, István and Antal, István and Dredán, Judit and Zelkó, Romána and Bertalanné Balogh, Emese},
	publisher = {Semmelweis Egyetem Oktatásfejlesztési-, módszertani és -szervezési Központ},
	unique-id = {1343125},
	year = {2003},
	orcid-numbers = {Marton, Sylvia/0000-0002-2419-3383; Antal, István/0000-0002-5434-201X; Dredán, Judit/0000-0001-5278-8053; Zelkó, Romána/0000-0002-5419-9137; Bertalanné Balogh, Emese/0000-0002-1127-3923}
}

@misc{MTMT:1348793,
	title = {Amorf polimer segédanyagok fizikai öregedésének hatása a polimer szerkezetére},
	url = {https://m2.mtmt.hu/api/publication/1348793},
	author = {Zelkó, Romána and Orbán, Á and Süvegh, Károly and Rácz, István},
	unique-id = {1348793},
	year = {2002},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137; Süvegh, Károly/0000-0001-8147-0546}
}

@misc{MTMT:1348792,
	title = {Többkomponensű bevonórendszerek vizsgálata},
	url = {https://m2.mtmt.hu/api/publication/1348792},
	author = {Orbán, Á and Zelkó, Romána and Dredán, Judit and Marton, Sylvia and Rácz, István},
	unique-id = {1348792},
	year = {2002},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137; Dredán, Judit/0000-0001-5278-8053; Marton, Sylvia/0000-0002-2419-3383}
}

@article{MTMT:1342795,
	title = {Coating polymer-plasticizer interaction in relation to the enthalpy relaxation of polymer},
	url = {https://m2.mtmt.hu/api/publication/1342795},
	author = {Zelkó, Romána and Orban, A and Nagy, J and Csoka, G and Rácz, István},
	doi = {10.1023/A:1016095904226},
	journal-iso = {J THERM ANAL CALORIM},
	journal = {JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY},
	volume = {68},
	unique-id = {1342795},
	issn = {1388-6150},
	year = {2002},
	eissn = {1572-8943},
	pages = {531-537},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137}
}

@article{MTMT:1339090,
	title = {Effect of plasticizer on the dynamic surface tension and the free volume of Eudragit systems},
	url = {https://m2.mtmt.hu/api/publication/1339090},
	author = {Zelkó, Romána and Orban, A and Süvegh, Károly and Riedl, Z and Rácz, István},
	doi = {10.1016/S0378-5173(02)00317-4},
	journal-iso = {INT J PHARM},
	journal = {INTERNATIONAL JOURNAL OF PHARMACEUTICS},
	volume = {244},
	unique-id = {1339090},
	issn = {0378-5173},
	year = {2002},
	eissn = {1873-3476},
	pages = {81-86},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137; Süvegh, Károly/0000-0001-8147-0546}
}

@{MTMT:1348564,
	title = {A filmképző polimer-lágyító interakció hatása a bevonat stabilitására},
	url = {https://m2.mtmt.hu/api/publication/1348564},
	author = {Orbán, Á and Zelkó, Romána and Dredán, Judit and Marton, Sylvia and Rácz, István},
	booktitle = {Műszaki Kémiai Napok 2001},
	unique-id = {1348564},
	year = {2001},
	pages = {128-129},
	orcid-numbers = {Zelkó, Romána/0000-0002-5419-9137; Dredán, Judit/0000-0001-5278-8053; Marton, Sylvia/0000-0002-2419-3383}
}