J.  Laakso and Setälä, H., ?Impacts of wood ants (Formica aquilonia Yarr.) on the invertebrate food web oft he boreal forest floor?, Annales Zoologici Fennici , vol. 37, pp. 93-100, 2000.

J.  Laakso and Setälä, H., ?Composition and trophic structure of detrital food web in an ant nest mounds of Formica aquilonia and in the surrounding forest soil.?, Oikos, vol. 81, pp. 266-278, 1998.

J.  Laakso and Setälä, H., ?Nest mounds of red wood ants (Formica aquilonia): hot spots for litter-dwelling earthworm?, Oecologica, vol. 111, pp.  565-569, 1997.