Prescription patterns analysis: Variations among Bulgaria, Romania, Macedonia and Bosnia HerzegovinaPETROVA, G. I.Central european journal of public health. 2002, Vol 10, Num 3, pp 100-103, issn 1210-7778, 4 p.Article

Monitoring of national drug policies: Regional comparison between Bulgaria, Romania, Macedonia, Bosnia HerzegovinaPETROVA, G. I.Central european journal of public health. 2001, Vol 9, Num 4, pp 205-213, issn 1210-7778Article

Electrochemical processing of brown coalsPETROVA, G. I; BYCHEV, M. I; KHUDYAKOVA, I. G et al.Solid fuel chemistry. 2001, Vol 35, Num 6, pp 84-88, issn 0361-5219Article

Electrochemical action on long-flame coal in cathodic spaceBYCHEV, M. I; PETROVA, G. I.Solid fuel chemistry. 2000, Vol 34, Num 4, pp 27-31, issn 0361-5219Article

The heat of formation of coalsBYCHEV, R. M; PETROVA, G. I; BYCHEV, M. I et al.Solid fuel chemistry. 2001, Vol 35, Num 5, pp 32-40, issn 0361-5219Article

Particularités de la synthèse d'un copolymère séquencé propylène + éthylène en utilisant TiCl3 microsphériquePOPOV, V. P; PETROVA, G. I; DUBANOVA, A. P et al.Plastičeskie massy. 1987, Num 6, pp 4-6, issn 0554-2901Article

Polymérisation du propylène utilisant TiCl3 d'activité élevéeDENILOV, R. KH; ZHAVORONKOV, M. N; SHESTAK, N. P et al.Plastičeskie massy. 1985, Num 3, pp 56-57, issn 0554-2901Article