By Gaston H. Gonnet and Ricardo Baeza-Yates. The preface, table of contents, index and all source code of this handbook. The main goal is to make available through Internet the source code of many algorithms (in C and/or Pascal) that have been already tes http://www.dcc.uchile.cl/~rbaeza/handbook/hbook.html
By P. Crescenzi and V. Kann; KTH Stockholm. A continuously updated version of the appendix from the book "Complexity and Approximation" (Springer, 1999). http://www.nada.kth.se/~viggo/wwwcompendium/
By Donald E. Knuth. Bibliographic details of the published volumes (1-3, various editions and translations) and on-line beta versions of parts of volume 4, "Combinatorial Algorithms". http://www-cs-staff.Stanford.EDU/~knuth/taocp.html