1. Beitrage zur Kenntnis der Salzgebietes von Ciechocinek;Willmann;Verhoff. Mus. Nat. Bremen,1949
2. New species of Typhlodromus (Parasitiformes: Phytoseiidae) from Georgia [In Russian];Wainstein;J. Acad. Gruzia,1958
3. Biomathematics and insect population problems;Ullyett;Mem. Ent. Soc. South Africa,1953
4. Beitrage zur Kenntnis der Invertebraten Fauna von Svalbard;Thor;Skrift. Svalbard Ishavet,1930
5. Dynamics of Insect Populations