1. SPECTROSCOPIC STUDIES OF SOME METALLIC BIS-DITHIOPHOSPHONATES, M(DTP)2, AND OF SOME ADDUCTS. Authors: RODICA MICU-SEMENIUC, IONEL HAIDUC, RADU SEMENIUC, ONUC COZAR.2. SPECTROSCOPIC CHARACTERIZATION OF SOME CHROMIUM O-ALKYLDITHIOCARBONATES. Authors: RADU FLORIN SEMENIUC, RODICA MICU-SEMENIUC, IONEL HAIDUC, ONUC COZAR.