Morphology and systematics of the Ceratioid Group a new morphographic approach, revision and emendation of the genus Muderongia, Cookson and Eisenack,1958.
Reference:
Monteil,E. (1991)
Morphology and systematics of the Ceratioid Group a new morphographic approach, revision and emendation of the genus Muderongia, Cookson and Eisenack,1958. Bulletin des Centres de Recherches Exploration-Production Elf-Aquitaine
Vol. 15 # 2 P. 461- 505