1. Collagen: an analysis of phylogenetic aspects;Bairati;Boll. Zool.,1972
2. Twisted fibrous arrangements in biological materials and cholesteric mesophases;Bouligand;Tissue & Cell,1972
3. Fibres géantes de collagène chez l'éponge Ephydatia fluviatilis;De Vos;J. Microscopie,1972
4. Ultrastructure de la coque collagène des gemmules d'Ephydatia Fluviatilis;De Vos;J. Microscopie,1974
5. Axially projected collagen structures;Doyle,1974