Unix Programmer's Manual Volume 2, 7th Edition, AT&T Bell Laboratories, 1978.
(1978)
Morris, Robert and Cherry, Lorinda (1978)
Morris, Robert and Cherry, Lorinda "BC - An Arbitrary Precision Desk-Calculator Language"
Morris, Robert and Cherry, Lorinda (1978)
Morris, Robert and Cherry, Lorinda "DC - An Interactive Desk Calculator"