by GEORGE E. SHAAD, CHARLES D. BECK, JOHN C. GRESHAM
Year of Publication 21.04.1959

by BECK CHARLES D, GRESHAM JOHN C, SHAAD GEORGE E
Year of Publication 01.11.1955

by Beck, Charles D., Rhudy, Ralph G.
Published in IEEE transactions on industry and general applications (01.01.1970)

by Beck, Charles D., Chandler, Edgar F.
Published in IEEE transactions on industry and general applications (01.11.1968)

by Charles A Beck, M D
Published in Chicago tribune (1963) (17.11.1987)