1. Winter activity of shrews in the subnivean environment;Ackefors;Zool. Rev.,1964
2. Spiders active under snow in southern Canada;Aitchison;Zool. Soc. Lond. Symp.,1978
3. Notes on low temperature activity of oligochaetes, gastropods and centipedes in southern Canada;Aitchison;Am. Midl. Nat.,1979a
4. Winter-active subnivean invertebrates in southern Canada. II. Coleoptera;Aitchison;Pedobiologia,1979b
5. Seasonal changes in the brain weight of the common shrew (Sorex araneus araneus Linnaeus, 1758);Bielak;Acta Theriol.,1960