| Issue Date | Title | Author(s) | Type | Мp-cat. |
| 1994 | A spectrophotometric method for the determination of equilibrium constants of the reversible 1,4-benzodiazepine ring-opening reaction | Pfendt, Lidija; Popović, Gordana   | Article | |
| 1998 | Acid-base equilibria in homogeneous and heterogeneous systems of clonazepam and nitrazepam | Popović, Gordana ; Dražić, Branka ; Pfendt, Lidija | Article | |
| 2000 | Analytical application of derivative spectrophotometry | Popović, Gordana ; Pfendt, Lidija; Stefanović, Violeta M. | Article | |
| 2001 | Derivative spectrophotometric method for determination of acidity constants of single step acid-base equilibria | Popović, Gordana ; Pfendt, Lidija; Moskovljević, VM | Article | |
| 2000 | Determination and structural correlation of the pKa values of p-substituted trans-2,3-epoxy-4-oxo-4-phenylbutanoic acids | Pfendt, Lidija; Popović, Gordana ; Kostić, M.; Stevović, Lj.; Drakulić, Branko; Juranić, Ivan | Article | |
| 2003 | Determination of all pK(a) values of some di- and tri-carboxylic unsaturated and epoxy acids and their polylinear correlation with the carboxylic group atomic charges | Pfendt, Lidija; Dražić, Branka ; Popović, Gordana ; Drakulić, Branko; Vitnik, Željko ; Juranić, Ivan | Article | |
| 1997 | Determination of midazolam in pharmaceutical dosage forms by second-order derivative ultraviolet spectrophotometry | Pfendt, Lidija; Popović, Gordana ; Stefanović, Violeta M.; Rajić, M.B | Article | |
| 2002 | Identification of the diazepine ring opening site in the reaction of acidic hydrolysis of bromazepam | Popović, Gordana ; Damjanović, Tatjana; Sladić, Dušan ; Pfendt, Lidija | Conference Paper | |
| 1999 | Određivanje lorazepama u prisustvu degradacionog proizvoda primenom derivativne UV spektrofotometrije drugog izvoda | Pfendt, Lidija; Stefanović, Violeta; Popović, Gordana | Article | |
| 2002 | Protolytic equlibria of bromazepam | Pfendt, Lidija; Popović, Gordana ; Damjanović, Tatjana ; Sladić, Dušan | Article | |
| 1996 | Spectrophotometric determination of flurazepam in pharmaceutical formulations | Popović, Gordana ; Pfendt, Lidija | Article | |
| 1995 | Spectrophotometric determination of midazolam in pharmaceutical formulations | Pfendt, Lidija; Popović, Gordana ; Supančić, S.I | Article | |
| 2004 | Study of acid hydrolysis of bromazepam | Damjanović, Tatjana ; Popović, Gordana ; Verbić, Srđan ; Pfendt, Lidija | Article | |
| 1990 | Study of protolytic equilibria of flurazepam | Pfendt, Lidija; Janjić, T.J; Popović, Gordana | Article | |
| 1995 | Study of protolytic, hydrolytic and solubility equilibria of midazolam | Pfendt, Lidija; Janjić, T.J; Popović, Gordana | Article | |