1. Field response to a new pheromonal compound isolated from Ips typographus;Bakke;Naturwissenschaften,1977
2. Kairomone response by the predators Thanasimus formicarius and Thanasimus rufipes to the synthetic pheromone of Ips typographus;Bakke;Norw. J. Entomol.,1978
3. Kairomone response in Thanasimus predators to pheromone components of Ips typographus;Bakke;J. Chem. Ecol.,1981
4. Number of Dendroctonus rufipennis (Kirby) and Thanasimus undulatus Say at pheromone-baited poisoned and unpoisoned trees;Dyer;J. Entomol. Soc. B.C.,1975