Ivan ChajdaM. Kotrle
By a q-lattice (see [3]) we mean an algebra A = (A\ V, A) with two binary operations satisfying the following identities:
Radomír Halaš
Pere GarcíaFrancesc Esteva
Brian Davey
Tibor Katriňák
Janusz CzelakowskiWies aw Dziobiak