Roy Hartfield

发表

Roy Hartfield, John E. Burkhalter, Todd M. Leleux, 1995 .

Rhonald M. Jenkins, Roy Hartfield, W. A. Foster, 2004 .

Mark Carpenter, Norman Speakman, Roy Hartfield, 2019 .

Roy Hartfield, Noel Cervantes, Jordan Eckert, 2020 .

Roy Hartfield, John Abbitt, Steve Rose, 1998, Appl. Math. Comput..

Roy Hartfield, Vivek Ahuja, R. Hartfield, 2008 .