Citation: N. Petkov et P. Kruizinga, COMPUTATIONAL MODELS OF VISUAL NEURONS SPECIALIZED IN THE DETECTION OF PERIODIC AND APERIODIC ORIENTED VISUAL-STIMULI - BAR AND GRATING CELLS, Biological cybernetics, 76(2), 1997, pp. 83-96
Citation: N. Petkov, THE NUMBERS AND DISTRIBUTION OF FERRUGINOUS DUCK AYTHYA-NYROCA BREEDING IN BULGARIA - AN INTERIM-REPORT, Ibis, 139(2), 1997, pp. 434-434