1. LC-MS/MS METHOD FOR DETERMINATION OF L-Α-PHOSPHATIDYLCHOLINE FROM SOYBEAN. Authors: IOAN SIMON, EMIL LUCA, MARIUS DORDAI, OANA CADAR, ANCA NAGHIU, DORINA SIMEDRU.2. DETERMINATION OF ANDROSTERONE FROM CELERY BY A NEW VALIDATED LC-MS/MS METHOD. Authors: IOAN SIMON, EMIL LUCA, MARIUS DORDAI, OANA CADAR, ANCA NAGHIU, DORINA SIMEDRU.