共 7 条
- [1] ISOLATION AND PARTIAL FRACTIONATION OF HUMUS SUBSTANCES FROM LIGNITES OF THE MARITZA-IZTOK DEPOSIT DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1978, 31 (07): : 857 - 860
- [2] ON THE COMPOSITION AND STRUCTURE OF ACIDS AND QUINONE, ISOLATED FROM LIGNITE HUMUS SUBSTANCES FROM THE MARITSA-IZTOK DEPOSIT DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1982, 35 (10): : 1391 - 1394
- [3] A STUDY ON THE CONTENT AND STRUCTURE OF DIALKYLPHTHALATES, ISOLATED FROM LIGNITE HUMUS SUBSTANCES FROM THE MARITSA-IZTOK DEPOSIT DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1982, 35 (06): : 773 - 776
- [4] SOME COMPOUNDS IN LIGNITE HUMIC MATERIAL FROM THE MARITSA-IZTOK DEPOSIT DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1992, 45 (06): : 71 - 74