1. Ageratochromene, a heterocyclic compound from the essential oils;Alertson;Acta Chem. Scand.,1955
2. Host selection by the pine engraver;Anderson;J. Econ. Ent.,1948
3. Pheromon in the bark beetle, Ips acuminatus Gyll;Bakke;Z. ang. Ent.,1967
4. Evidence of a population aggregating pheromone in Ips typographus (Coleoptera: Scolytidae);Bakke;Contrib. Boyce Thompson Inst.,1970
5. Aggregation pheromone in the bark beetle Ips duplicatus (Sahlberg);Bakke;Norw. J. Ent.,1975