Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1974__29_141149, author = {O. Bottema}, title = {A {Triangle} {Transformation.}}, journal = {Elemente der Mathematik}, pages = {135--138}, publisher = {mathdoc}, volume = {29}, year = {1974}, zbl = {0294.50012}, url = {http://geodesic.mathdoc.fr/item/ELMA_1974__29_141149/} }
O. Bottema. A Triangle Transformation.. Elemente der Mathematik, Tome 29 (1974), pp. 135-138. http://geodesic.mathdoc.fr/item/ELMA_1974__29_141149/