Complex conditioned reflexes in fish in view of the circadian rhythm and evolutional development of the conditioned-reflex activities

Kovacevic, N.; Rakic, L.

Odjeljenja Prirodnikh Nauka Crnogorska Akademija Nauka I Umjetnosti Glasnik 2: 31-47

1977

https://eurekamag.com/research/020/759/020759878.php