Citation: Mozharivsky, Yu.; Franzen, H.F.; Kaczorowski, D. (2001). Symmetry-breaking transitions in Ho Cu As2-x Px and Er Cu As2-x Px (x = 0 - 2): crystal structure, application of Landau theory, magnetic and electrical properties. Zeitschrift fuer Anorganische und Allgemeine Chemie, 627, pp. 2163-2172.