@article{ELMA_1983__38_141300,
     author = {Karl Scherer},
     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},
     pages = {1--3},
     publisher = {mathdoc},
     volume = {38},
     year = {1983},
     zbl = {0515.52007},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1983__38_141300/}
}