1. R.G. Bartle, Review of The General Theory of Integration, by Ralph Henstock, Bull. Amer. Math. Soc. (New Series) 29 (1993), 136–139.
2. RM. McLeod, private communication, 1993.
3. R.M. McLeod, The Generalized Riemann Integral, Cams Mathematical Monographs, Number 20, Math. Assoc, of America., 1980.
4. O. Shisha, The generalized Riemann integral (lecture), International Conference on Approximation, Probability, and Related Fields, Santa Barbara, CA, May 22, 1993.
5. A. Zygmund, Trigonometric Series, Vol. 1, Cambridge University Press, Cambridge, 1977.