Reference

C.A.M. Broers, H.H.M. Meilers, J.C. Symens, C.K. Stumm, G.D. Vogels, Guy Brugerolle (1993): Symbiontic association of Psalteriomonas vulgaris n. spec. with Methanobacterium formicium – Europ. J. Protistol. – 29: 98 - 105.