(1)Amdahl, G. M.: "Validity of the single processor approach to achieving
   large scale computing capabilities", Proc. AFIPS Spring Joint Computer
   Conf. 30, Atlantic City, N.J. (April, 1967), pp.483-485.
 
(2)A more general paper, but includes enough about Amdahl's
   Law and can lead back to the original work:
   Olaf M. Lubeck, "Supercomputer Performance: The Theory, Practice and
   Results", Advances in Computers, 1988, Academic Press, pp. 309 - 361.
 
(3)A reference to Amdahl's Law, with
   particular attention to the context of massively parallel computing:
   John L. Gustafson, "Reevaluating Amdahl's Law"
   Communications of the ACM, Vol. 31 No. 5: 532-533 (May 1988)
 
(4)Hockney & Jesshope, Parallel Computers 2, Adam Hilger, Bristol, 1988.
 
(5)A paper by Amdahl explaining his law for vector machines
   and its application to parallel machines in
   "The international journal of supercomputer applications", volume 2,
   number 1, spring 1988.
 
(6)D. A. Patterson & J. L. Hennessy: "Computer Architecture:
   A Quantitative Approach", Morgan Kaufmann Publishers, Inc., 1990,
   ISBN: 1-55860-069-8, Chapt. 1 & Chapt. 10.
 
(7)Vipin Kumar and Anshul Gupta.
   Analyzing scalability of parallel algorithms and architectures.
   Technical report, TR-91-18, Computer Science Department, University
   of Minnesota, June 1991.
   A short version of the paper appears in the Proceedings of the 1991
   International Conference on Supercomputing, Germany, and as an invited
   paper in the Proc. of 29th Annual Allerton Conference on
   Communication, Control and Computing, Urbana,IL, October 1991.
   To appear in Journal of Parallel and Distributed Computing, 1993.
 
(8)IEEE Computer magazine, August 1991.
   "The Open Channel" (page 120) of that issue introduces a ramification
   of Amdahl's law as well as Amdahl's law itself.
 
(9)L. Kleinrock and J.-H. Huang, IEEE Transactions on Software
   Engineering, "On Parallel Processing Systems: Amdahl's Law
   Generalized and Some Results on Optimal Design",
   18, 5, May, 1992, 434-447.
 
(10)G. Bell: "ULTRACOMPUTERS, A Teraflop Before Its Time",
   Comm. of the ACM, Vol. 35, No. 8, August 1992, pp.27-47. (p.32)