La catégorie des algèbres quantifiées A. Preller (1967) Publications du Département de mathématiques (Lyon)
Lattice endomorphisms of 2 X Carlton J. Maxson, Ponnammal Natarajan (1977) Czechoslovak Mathematical Journal
Logics of bipartite graphs and complete multipartite graphs Zdeněk Andres, Bohdan Zelinka (1982) Časopis pro pěstování matematiky
Luzin and anti-Luzin almost disjoint families Judith Roitman, Lajos Soukup (1998) Fundamenta Mathematicae Under M A ω 1 every uncountable almost disjoint family is either anti-Luzin or has an uncountable Luzin subfamily. This fails under CH. Related properties are also investigated.