Idiotypic regulation of the immune system. Common idiotypic specificities between idiotypes and antibodies raised against anti-idiotypic antibodies in rabbits, Winkler, M., Franssen J.D., Collignon C., Leo O., Mariamïr B., Van de Walle P, de Groote D., and Urbain J. , J.Exp.Med., 1/7/1979, Volume 150, Issue 1, Number 195, p.184 - 195, (1979)