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ANDERUNG DES ENOL-KETO-VERHAELTNISSES VON ACETESSIGESTER DURCH ⁶⁰CO-GAMMA -BESTRAHLUNG. = VARIATION DU RAPPORT CETOENOLIQUE DE L'ESTER ACETOACETIQUE PAR IRRADIATION GAMMA DE ⁶⁰COGETOFF N; FRATEV F.1977; Z. PHYS. CHEM., NEUE FOLGE, WIESBADEN; DTSCH.; DA. 1977; VOL. 104; NO 3; PP. 131-138; ABS. ANGL.; BIBL. 14 REF.Article

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AB INITIO STUDY OF CYCLOBUTADIENE IN EXCITED STATES: OPTIMIZED GEOMETRIES, ELECTRONIC TRANSITIONS AND AROMATICITIESFRATEV F; MONEV V; JANOSCHEK R et al.1982; TETRAHEDRON; ISSN 0040-4020; GBR; DA. 1982; VOL. 38; NO 19; PP. 2929-2932; BIBL. 29 REF.Article

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A NEW CLASS OF ORGANIC LUMINOPHORES WITH A STILBENE CHROMOPHORE: 3-PHENYLMETHYLENE-1(3H)-ISOBENZOFURANONESNIKOLOV P; FRATEV F; MINCHEV S et al.1983; ZEITSCHRIFT FUER NATURFORSCHUNG. TEIL A. PHYSIK, PHYSIKALISCHE CHEMIE, KOSMOPHYSIK; ISSN 0340-4811; DEU; DA. 1983; VOL. 38; NO 2; PP. 200-205; BIBL. 23 REF.Article

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A classification of polyenes into 4L+2- and 4L-classes on the basis of Coulson's bond orders and information theory and its application to the interpretation of electrocyclic reactionsFRATEV, F; ENCHEV, V; KARADAKOV, P et al.International journal of quantum chemistry. 1984, Vol 26, Num 6, pp 993-1015, issn 0020-7608Article