Eigenvectors of a 2n×2n matrix. - Sak Charmonman (Commun. ACM, 1967)

Sixty-character representation of APL symbols. - Sak Charmonman (ACM SIGPLAN Notices, 1970)

A comparison of the structures of APL, FORTRAN, ALGOL and PL/I. - Sak Charmonman (ACM SIGPLAN Notices, 1970)

A generalization of APL array-oriented concept. - Sak Charmonman (ACM SIGPLAN Notices, 1970)

A PL/1 batch processor for APL. - Sak Charmonman; J. E. Bell (APL, 1972)

WHERE Ω. - Richard L. Mercer; Sak Charmonman (ACM SIGAPL APL Quote Quad, 1973)