@article{1077492639, author = {Gleyzal, Andr\'e}, title = {Interval-functions}, journal = {Duke Math. J.}, volume = {8}, number = {1}, year = {1941}, pages = { 223-230}, language = {en}, url = {http://dml.mathdoc.fr/item/1077492639} }
Gleyzal, André. Interval-functions. Duke Math. J., Tome 8 (1941) no. 1, pp. 223-230. http://gdmltest.u-ga.fr/item/1077492639/