@article{article65a0397b,
title   = {Circasseptan biologic time structure},
author = {Halberg, F and Marques, Nélson and Cornelissen, G and Bingham, C and Sanchez de la Pena, S and Halberg, J and Marques, Mirian David and Wu, J and Halberg, E},
year = {1990},
journal   = {Acta Entomologica Bohemoslovaca}
}