1. M. W. Wilkes, D. J. Wheeler, & S. Gill, Programs for an Electronic Digital Computer, 2nd Edition, Addison-Wesley Publishing Co., Inc., Reading, Massachusetts, 1957, p. 86.
2. W. L. Frank, “Mathematical subroutines for the UNIVAC scientific computer,” Computers and Automation, v. 6, No. 9, 1957, p. 10-13.
3. Note on a method for computing infinite integrals of oscillatory functions;Longman, I. M.;Proc. Cambridge Philos. Soc.,1956
4. R. Lobatto, Lessen over de Integraal-Rekening, The Hague, 1852, p. 207-210.