1. Backus, J. W., F. L. Bauer, J. Green, C. Katz, J. McCarthy, P. Naur (Editor),A. J. Perlis, H. Rutishauser, K. Samelson, B. Vauquois, J. H. Wegstein, A. van Wijngaarden andM. Woodger: Report on the algorithmic language ALGOL 60. Num. Math.2, 106?136 (1960) and Comm. Ass. Comp. Mach.3, 299?314 (1960).
2. Math. Tab. Nat. Phys. Lab.;C. W. Clenshaw,1962