1. STUDY OF THE CHROMATOGRAPHIC RETENTION OF SOME NEW ORGANOSELENIUM AND ORGANOTELLURIUM COMPOUNDS CONTAINING INTRAMOLECULAR INTERACTIONS BY HPTLC. Authors: SILVIA LENUŢA DUNCA, MONICA KULCSAR, ANCA SILVESTRU, CRISTIAN SILVESTRU, COSTEL SÂRBU.2. AMMONIUM SALTS OF ORGANOPHOSPHORUS ACIDS. CRYSTAL AND MOLECULAR STRUCTURE OF [Et3NH]+[(SPMe2)(SPPh2)N]- AND [2-{O(CH2CH2)2N(H)CH2}C6H4. Authors: ANCA SILVESTRU, DRAGOS MARGINEANU, RICHARD A. VARGA, MONICA KULCSAR, ANA MARIA PREDA.