Display of electrical wave forms from the heart. - R. B. Warren; Roger C. Barr; G. Scott Herman-Giddens; M. S. Spach (SIGGRAPH, 1975)

BIOMAC: Block Structured Programming Using PDB-11 Assembler Language. - G. Scott Herman-Giddens; R. B. Warren; Roger C. Barr; M. S. Spach (Softw. Pract. Exp., 1975)

Organization of a computer system for measuring the electrical activity of the heart. - Roger C. Barr; G. Scott Herman-Giddens; M. S. Spach; R. B. Warren; M. N. Morrow; T. M. Gallie Jr. (ACM-SE, 1976)

Two-level control of a real-time data acquisition and control system for studying the electrical activity of the heart. - Roger C. Barr; G. Scott Herman-Giddens; R. B. Warren; M. S. Spach (ACM-SE, 1978)