@article{bwmeta1.element.desklight-c9b75fde-2385-4f14-a7ae-f36501c37519,
author = {G. Gr\"atzer and J. P\l onka and A. Sekanina},
title = {On the number of polynomials of a universal algebra, I},
journal = {Colloquium Mathematicae},
volume = {22},
year = {1970},
pages = {9-11},
zbl = {0211.32102},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-c9b75fde-2385-4f14-a7ae-f36501c37519}
}
G. Grätzer; J. Płonka; A. Sekanina. On the number of polynomials of a universal algebra, I. Colloquium Mathematicae, Tome 22 (1970) pp. 9-11. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-c9b75fde-2385-4f14-a7ae-f36501c37519/