@article{article7ef902a9,
title   = {Chronobiology: a frontier in biology and medicine},
author = {Cornelissen, G and Halberg, E and Halberg, F and Halberg, J and Sampson, M and Hillman, D and Nelson, W and Sanchez de la Pena, S and Jinyi, W and Del More, P and Marques, Nélson and Marques, Mirian David and Fernandez, J R},
year = {1989},
journal   = {Chronobiologia}
}