. "1992"^^ . "1992"^^ . "Weslien, J. & Regnander, J. 1992. The influence of natural enemies on brood production in Ips typographus (Col. Scolytidae) with special reference to egg-laying and predation by Thanasimus formicarius (Col.: Cleridae). Entomophaga, 37(2): 333-342." . . "Weslien & Regnander (1992)" . . "Weslien & Regnander (1992)" .