Write Yourself a Scheme in 48 Hours
Wikibooks contributors
The unpleasant profession of Jonathan Hoag
Robert A. Heinlein
Monads for functional programming
Philip Wadler
Hacker Monthly #13
Netizens Media
Hacker Monthly (13)
Open Data Structures (in pseudocode)
Pat Morin
Open Data Structures (in Java)
Open Data Structures (in C++)