Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1962__66_177150, author = {Raymond M. Redheffer}, title = {An {Extension} of {Certain} {Maximum} {Principles.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {32--42}, publisher = {mathdoc}, volume = {66}, year = {1962}, zbl = {0115.31201}, url = {http://geodesic.mathdoc.fr/item/MOMA_1962__66_177150/} }
Raymond M. Redheffer. An Extension of Certain Maximum Principles.. Monatshefte für Mathematik, Tome 66 (1962), pp. 32-42. http://geodesic.mathdoc.fr/item/MOMA_1962__66_177150/