E.  Ranta, Vepsäläinen, K., Ås, S., Haila, Y., Pisarski, B., and Tiainen, J., ?Island biogeography of ants (Hymenoptera, Formicidae) in four Fennoscandian archipelagoes?, Acta Entomologica Fennica, vol. 42, p. 64, 1983.

E.  Ranta, Lappalainen, K., and Miettinen, H., ?Foraging dynamics oft wo bumble-bee species (B. lucorum and B. lapidarius) during one summer?, Annales Zoologici Fennici, vol. 21, pp. 77-88, 1984.

E.  Ranta and Vepsäläinen, K., ?Why are there so many species? Spatio-temporal heterogeneity and northern bumblebee communities?, Oikos, vol. 36, pp. 28-34, 1981.

E.  Ranta and Tiainen, M., ? Structure in seven bumblebee communities in eastern Finland in relation to resource availability?, Holarctic Ecology, vol. 5, pp. 48-54, 1982.

E.  Ranta and Lundberg, H., ? Food niche analyses of bumblebees: a comparison of three data collecting methods?, Oikos, vol. 36, pp. 12-16, 1981.

E.  Ranta and Lundberg, H., ?Resource utilization by bumblebee queens, workers and males in a subarctic area?, Holarctic Ecology, vol. 4, pp. 145-154, 1981.

E.  Ranta and Lundberg, H., ?Resource partitioning in bumblebees: the significance of differences in proboscis length?, Oikos, vol. 35, pp. 298-302, 1980.

E.  Ranta, ?Proboscis length and coexistence of bumblebee species.?, Oikos, vol. 43, pp. 189-196, 1984.

E.  Ranta, ?Foraging differences in bumblebees?, Annales Entomologici Fennici, vol. 49, pp. 17-22, 1983.

E.  Ranta, ?Species structure of North European bumblebee communities?, Oikos, vol. 38, pp. 202-209, 1982.

B.  Pisarski, Vepsäläinen, K., Ranta, E., Ås, S., Haila, Y., and Tiainen, J., ? A comparison oft wo methods of sampling island ant communities?, Annales Entomologici Fennici, vol. 48, pp. 75-80, 1982.

H.  Lundberg and Ranta, E., ?Habitat and food utilization in subarctic bumblebee community?, Oikos, vol. 35, pp. 303-310, 1980.

E.  Ranta, Teräs, I., and Lundberg, H., ?Phenological spread in flowering of bumblebee-pollinated plants?, Annales Botanici Fennici, pp. 229-236, 1981.

E.  Ranta, Lundberg, H., and Teräs, I., ?Patterns of resource utilization in two Fennoscandian bumblebee communities?, Oikos, vol. 36, pp. 1-11, 1981.