\Bibitem{Pin96} \by A.~G.~Pinus \paper On rich and poor algebras \jour Algebra Logika \yr 1996 \vol 35 \issue 6 \pages 709--718 \mathnet{http://mi.mathnet.ru/al2378} \mathscinet{https://mathscinet.ams.org/mathscinet-getitem?mr=1454685}