A major sequence of the neurofibromatosis type 1 gene: cDNA sequence, genomic structure and point mutations. - Cawthon,R.M.; Weiss,M.; Xu,G.; Viskochil,D.; Culver,M.; Stevens,J.; Robertson,M.; Dunn,D.; Gesteland,R.; O'Connel,P. (Cell, 1990)