Préordres et équivalences dans l'ensemble des familles d'un ensemble Micheline Froda-Schechter (1965) Archivum Mathematicum
Pseudocomplemented ordered sets Radomír Halaš (1993) Archivum Mathematicum The aim of this paper is to transfer the concept of pseudocomplement from lattices to ordered sets and to prove some basic results holding for pseudocomplemented ordered sets.