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Elias SF, Sigelman CK, Danker-Brown P.Elias SF, et al. Among authors: sigelman ck.Am J Ment Defic. 1980 Jul;85(1):53-60.Am J Ment Defic. 1980.PMID: 7446569
Sigelman CK, Budd EC, Spanhel CL, Schoenrock CJ.Sigelman CK, et al.Appl Res Ment Retard. 1981;2(4):347-57. doi: 10.1016/0270-3092(81)90029-1.Appl Res Ment Retard. 1981.PMID: 7332323No abstract available.