Nicole Guérin, Suzanne Boulenguiez, Alain Reinberg, Geneviéve Di Costanzo, Philippe Guran, Yvan Touitou,
Diurnal Changes in Psychophysiological Variables of School Girls: Comparison with Regard to Age and Teacher's Appreciation of Learning Chronobiology International. ,vol. 8, pp. 131- 148 ,(1991) ,
10.3109/07420529109059164