@article{bwmeta1.element.desklight-0d69e21a-0c1d-427d-b692-ea653fede388,
author = {G. Gr\"atzer and J. P\l onka},
title = {On the number of polynomials of a universal algebra, II},
journal = {Colloquium Mathematicae},
volume = {22},
year = {1970},
pages = {13-19},
zbl = {0215.06302},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-0d69e21a-0c1d-427d-b692-ea653fede388}
}
G. Grätzer; J. Płonka. On the number of polynomials of a universal algebra, II. Colloquium Mathematicae, Tome 22 (1970) pp. 13-19. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-0d69e21a-0c1d-427d-b692-ea653fede388/