WELSH, R.P. & J.M. JOOSTEN. Piet Mondrian. Catalogue raisonné. (1998). 2 vols. Fol. Ocl. w. dust-j. & slipcase. -- Added: D. HELMS, A. VALSTAR-VERHOFF, ed. Vordemberge-Gildewart. The complete works. (1990). 4°. Ocl. w. dust-j.-- E. HOEK, red. Theo van Doesburg, œuvrecatalogus. 2000. Sm. thick 4°. Ocl. -- (4).