@article{05248935, title = {Counting all equilateral triangles in }, journal = {Acta Mathematica Universitatis Comenianae. New Series}, volume = {77}, year = {2008}, pages = {129-140}, zbl = {1164.11016}, language = {en}, url = {http://dml.mathdoc.fr/item/05248935} }
Ionascu, E.J. Counting all equilateral triangles in . Acta Mathematica Universitatis Comenianae. New Series, Tome 77 (2008) pp. 129-140. http://gdmltest.u-ga.fr/item/05248935/