1. H. L. Abbott, C. E. Aull, E. Brown and D. Suryanarayana, Quasiperfect numbers, Acta Arith. 22(1973), 439–447; Errata: 29(1976), 427-428.
2. W. Aiello, G. E. Hardy and M. V. Subbarao, On the existence of e-multiperfect numbers, Fib. Quart. 25(1987), 65–71.
3. L. Alaoglu and P. Erdös, A conjecture in elementary number theory, Bull. A.M.S. 50(1944), 881–882.
4. L. B. Alexander, Odd triperfect numbers are bounded below by 1060, (M. A. Thesis, 1984, East Carolina Univ.).
5. J. Alanen, O. Ore and J. Stemple, Systematic Computation of amicable numbers, Math. Comp. 21(1967), 242–245.