Interactive trajectory analysis: the graphic rocket system. - Barry W. Boehm; Vivian R. Lamb; R. L. Mobley; John E. Rieber (DAC, 1969)

POGO: Programmer-oriented graphics operation. - John E. Rieber; Barry W. Boehm; Vivian R. Lamb; R. L. Mobley (DAC, 1969)