@article{GDZPPN002034085, title = {On the general solution of the triangle mean value equation.}, journal = {Aequationes mathematicae}, volume = {25}, year = {1982}, pages = {209-215}, zbl = {0531.39003}, url = {http://dml.mathdoc.fr/item/GDZPPN002034085} }
Haruki, Shigeru. On the general solution of the triangle mean value equation.. Aequationes mathematicae, Tome 25 (1982) pp. 209-215. http://gdmltest.u-ga.fr/item/GDZPPN002034085/