sentences:  B. C. Burchfiel, "Structural geology of the Spector Range Quadrangle, Nevada, and its regional significance," "GSA Bulletin;" February 1965; v. 76; no.2; p. 175-191
  
  B. C. Burchfiel, R. J. Fleck, D. T. Secor, R. R. Vincelette, and G. A. Davis, "Geology of the Spring Mountains, Nevada," "GSA Bulletin"; July 1974; v. 85; no.7; p. 1013–1022
  
  B. C. Burchfiel and G. A. Davis, "Nature and controls of Cordilleran orogenesis, western United States