1. Geyspitz, K.F. and Zarankina, A.I., Peculiar Aspects of the Photoperiodic Reaction in the Pale Tussock Dasychira pudibunda L. (Lepidoptera, Orgyidae), Entomol. Obozr., 1963, vol. 42, pp. 29–38.
2. Goettel, M.S. and Philogènea, B.J.R., Effects of Photoperiod and Temperature on the Development of a Univoltine Population of the Banded Woollybear, Pyrrharctia (Isia) isabella, J. Insect Physiol., 1978, vol.24, pp. 523–527.
3. Danilevsky, A.S., Photoperiodism and Seasonal Development of Insects, Oliver and Boyd, Edinburgh, 1965.
4. Tauber, M.J., Tauber, C.A., and Masaki, S., Seasonal Adaptations of Insects, Oxford University Press, New York, 1986.
5. Danks, H.V., Insect Dormancy: an Ecological Perspective. Biological Survey of Canada (Terrestrial Arthropods), Ottawa, 1987.