Felsner, Stefan; Knauer, Kolja (2011), "Distributive lattices, polyhedra, and generalized flows", European Journal of Combinatorics, 32 (1): 45–59, doi:10.1016/j.ejc.2010.07.011, MR2727459.
Charles S. Peirce (1880). "On the Algebra of Logic". American Journal of Mathematics. 3: 15–57. doi:10.2307/2369442. JSTOR2369442., p. 33 bottom
A. Korselt (1894). "Bemerkung zur Algebra der Logik". Mathematische Annalen. 44: 156–157. doi:10.1007/bf01446978. Korselt's non-distributive lattice example is a variant of M3, with 0, 1, and x, y, z corresponding to the empty set, a line, and three distinct points on it, respectively.
A. Korselt (1894). "Bemerkung zur Algebra der Logik". Mathematische Annalen. 44: 156–157. doi:10.1007/bf01446978. Korselt's non-distributive lattice example is a variant of M3, with 0, 1, and x, y, z corresponding to the empty set, a line, and three distinct points on it, respectively.