Per Johan Jakobsen

Explicit trade-off rules in proximate adaptive agents

Marc Mangel, Geir Huse, Chris Wilcox, 2003 .

Fish kairomone regulation of internal swarm structure in Daphnia pulex (Cladocera: Crustacea)

Per Johan Jakobsen, Knut Helge Jensen, Ole T. Kleiven, 2004, Hydrobiologia.

The effect of food limitation on vertical migration in Daphnia longispina

G. Johnsen, P. Jakobsen, Per Johan Jakobsen, 1987 .

The influence of food limitation on swarming behaviour in the waterflea Bosmina longispina

G. Johnsen, P. Jakobsen, Per Johan Jakobsen, 1988, Animal Behaviour.