@article{GDZPPN002030039,
title = {On the Weierstrass functions, Sigma, Zeta, Pe, and their functional and differential equations. (Short Communication).},
journal = {Aequationes mathematicae},
volume = {15},
year = {1977},
pages = {115-117},
zbl = {0378.33005},
url = {http://dml.mathdoc.fr/item/GDZPPN002030039}
}
Bank, Steven B.; Kaufman, Robert P. On the Weierstrass functions, Sigma, Zeta, Pe, and their functional and differential equations. (Short Communication).. Aequationes mathematicae, Tome 15 (1977) pp. 115-117. http://gdmltest.u-ga.fr/item/GDZPPN002030039/