1. mr Darija Knežević Ratković (2024) "Ion-exchange retention models in the analysis of retention mechanisms of amitriptyline hydrochloride and its impurities in hydrophilic interaction liquid chromatography" - Contemporary Materials 2024 - Savremeni Materijali
(https://ekonferencije.com/sr1/rad/ion-exchange-retention-models-/6621)

2. mr Darija Knežević Ratković (2023) "RETENTION MECHANISMS OF AMITRIPTYLINE AND ITS IMPURITIES IN HYDROPHILIC INTERACTION LIQUID CHROMATOGRAPHY" - Contemporary Materials 2023 - Savremeni materijali
(https://ekonferencije.com/sr1/rad/retention-mechanisms-of-amitri/6510)