Buchholz, K. and Ruthmann, A. 1995. The mesenchyme-like layer of the fiber cells of Trichoplax adhaerens (Placozoa), a syncytium, Zeitschrift fuer Naturforschung Section C Biosciences, 50, 282-285.
Collins, A. G. 1998. Evaluating multiple alternative hypotheses for the origin of Bilateria: An analysis of 18S molecular evidence, Proceedings of the National Academy of Sciences, USA, 95, 15458-15463.
Grell, K.G. 1982. Placozoa. In Parker, S.P., Synopsis and Classification of Living Organisms, vol. 1. McGraw-Hill, New York: 639.
Grell, K. C. et Lopez-Ochoterena, E., 1987. A new record of Trichoplax adhaerens F. E. * Schulze (Phylum Placozoa) in the Mexican Caribbean Sea, Anales del Instituto de Ciencias del Mar y Limnologia Universidad Nacional Autonoma de Mexico, 14, 255-256.
Grell, K. G. et Ruthmann, A. 1991. Placozoa, in F. W. Harrison et W. J. A (ed.), Microscopic Anatomy of Invertebrates, Vol. 2. Placozoa, Porifera, Cnidaria, and Ctenophora (New York: Wiley-Liss), pp. 13-28.
Pearse, V. B. 1989. Growth and behavior of Trichoplax adhaerens: First record of the phylum Placozoa in Hawaii [USA], Pacific Science, 43, 117-121.
Schuchert, P. 1993/ Trichoplax adhaerens (Phylum Placozoa) Has Cells That React with Against the Neuropeptide Rf Amide, Acta Zoologica (Copenhagen), 74, 115-117.
