Harold C. Schonberg (8 de maio de 1998). «Does Anyone Make a Bad Move In 'Chess'?». New York Times. Consultado em 27 de abril de 2008 "Bernie Jacobs, the grand Rhadamanthus of the Shubert Organization, one of the presenters of the musical, says that Bobby originally was the model for the American player but that in the course of events his image got a little diluted."
