Matic Z., Negrea S., Fundora Martinez C., 1977: Recherches sur les Chilopodes hypogés de Cuba. II. 25 pp.
 
95501
Mayer K., 1938: Zur Kenntnis der Buchenhöhlenfauna. 13 pp. (in German).
 
80506
Mitchell R. W., 1968: New species of Sphalloplana (Turbellaria: Paludicola) from the caves of Texas and a reexamination of the genus Speophila and the family Kenkidae. 24 pp.
 
95126
Mitchell R. W., 1969: A comparison of temperate and tropical cave communities. 16 pp.