Maliukova, I.V. & Rakic, L. & Kovacevic, N. (1979)
(Characteristics of the conditioned motor reactions of unrestrained elasmobranches and teleosts). Zhurnal Evoliutsionno Biokhimii i Fiziologii, 15(6), 590–595

Platt, C.J. & Bullock, T.H. & Czéh, G. & Kovačević, N. & Konjević, D. & Gojković, M. (1974)
Comparison of Electroreceptor, Mechanoreceptor, and Optic Evoked Potentials in the Brain of Some Rays and Sharks. Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, 95, 323–355
DOI: 10.1007/BF00609705

Radil-Weiss, T. & Kovacevic, N. (1970)
Influence of low temperature on the discharge mechanism of the electric fish Torpedo marmorata and T. ocellata. Marine Biology, 5(1), 18–21
DOI: 10.1007/BF00352488

Radil-Weiss, T. & Kovacevic, N. (1969)
Some biophysical parameters of the skin of the electric fish Torpedo marmorata. Marine Biology, 3(4), 304–305
DOI: 10.1007/BF00698860