@article{GDZPPN00208063X,
title = {The impossibility of a tesselation of the plane into equilateral triangles whose sidelengths are mutually different, one of them being minimal.},
journal = {Elemente der Mathematik},
volume = {38},
year = {1983},
pages = {1-3},
zbl = {0515.52007},
url = {http://dml.mathdoc.fr/item/GDZPPN00208063X}
}
Scherer, Karl. The impossibility of a tesselation of the plane into equilateral triangles whose sidelengths are mutually different, one of them being minimal.. Elemente der Mathematik, Tome 38 (1983) pp. 1-3. http://gdmltest.u-ga.fr/item/GDZPPN00208063X/