[1] L. BERAN:
Orthomodular Lattices. (Algebraic Approach), D. Reidel Publishing Co., Dordrecht - Boston, Mass. 1984.
MR 0785005
[2] L. BERAN:
Extension of a theorem of Gudder and Schelp to polynomials of orthomodular lattices. Proc. Amer. Math. Soc. 81 (1981), 518-520.
MR 0601720 |
Zbl 0458.06006
[3] G. BRUNS G. KALMBACH:
Some remarks on free orthomodular lattices. Proc. Univ. of Houston, Lattice Theory Conf. Houston, 1973, 397-403.
MR 0401564