Sequence variations in small-subunit ribosomal RNAs of Hartmannella vermiformis and their phylogenetic implications
Weekers, P.H.H., R.J. Gast, P.A. Fuerst and T.J. Byers, Sequence variations in small-subunit ribosomal RNAs of Hartmannella vermiformis and their phylogenetic implications, Molecular Biology and Evolution 11(4):684-690, 1994