P.  Verhaert, van Mellaert, H., Swinnen, K., and De Loof, A., ?Vertebrate somatotropin-like peptides in insects?, in Progress in clinical and biological research, Vol. 217A, Progress in developmental biology, Part A. Tenth International Congress of the International Society of Developmental Biologists, Los Angeles, California, Aug. 4-9, 1985, H. C.  Slavkin, Ed. New York: Alan R. Lis, Submitted, pp. 359 - 364.