Eric Weisstein’s World of Mathematics entry [Weisstein] on Lam’s problem from Wolfram Research.
[lam1996search]
The search for a finite projective plane of order 10
Proceedings of the Organic Mathematics Workshop,
1996
[lam1989non]
The non-existence of finite projective planes of order 10
Canad. J. Math 41(6),
1989
[Weisstein]
Eric Weisstein
howpublished: http://mathworld.wolfram.com/LamsProblem.html