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Acta Physiologica Et Pharmacologica Bulgarica|January 1, 1988
Effects of the nootropic agents adafenoxate and meclofenoxate on brain biogenic monoamines in aged ratsS L Stancheva, V D Petkov, V V PetkovGerontology|January 1, 1988
Age-related changes in brain neurotransmissionV D Petkov, V V Petkov, S L StanchevaGeneral Pharmacology|January 1, 1990
Changes in brain biogenic monoamines induced by the nootropic drugs adafenoxate and meclofenoxate and by citicholine (experiments on rats)V D Petkov, S L Stancheva, L Tocuschieva, et al.General Pharmacology|January 1, 1991
Age-related changes of the effects of a group of nootropic drugs on the content of rat brain biogenic monoaminesS L Stancheva, V D Petkov, C I Hadjiivanova, et al.General Pharmacology|January 1, 1987
Age-related changes in brain biogenic monoamines and monoamine oxidaseV D Petkov, S L Stancheva, V V Petkov, et al.The American Journal of Chinese Medicine|March 3, 2004
Behavioral effects of Ginkgo biloba L., Panax ginseng C.A. Mey. and GincosanV D Petkov, S Belcheva, V V PetkovActa Physiologica Et Pharmacologica Bulgarica|January 1, 1988
Comparative studies on the effects of the nootropic drugs adafenoxate, meclofenoxate and piracetam, and of citicholine on scopolamine-impaired memory, exploratory behavior and physical capabilities (experiments on rats and mice)V D Petkov, A H Mosharrof, V V PetkovActa Physiologica Et Pharmacologica Bulgarica|January 1, 1991
Effects of serotoninergic receptor antagonists and their combination with scopolamine on memoryV D Petkov, V L Markovska, V V PetkovActa Physiologica Et Pharmacologica Bulgarica|January 1, 1987
Effects of meclofenoxate and citicholine on learning and memory in aged ratsA H Mosharrof, V D Petkov, V V PetkovActa Physiologica Et Pharmacologica Bulgarica|January 1, 1984
Age-related changes in rat brain dopaminergic receptorsV V Petkov, V D Petkov, T Grahovska, et al.Pageof 12