1. Schach S, Daumer M, Neiß A: Maintaining high quality of statistical evaluations based on the SLCMSR data base. Validation Policy of the Sylvia Lawry Centre. 2005
2. R Development Core Team: R: A language and environment for statistical computing. 2004, R Foundation for Statistical Computing, Vienna, Austria, ISBN 3-900051-07-0, [
http://www.R-project.org
]
3. Gentleman R, Ihaka R: Lexical Scope and Statistical Computing. JCGS. 2000, 9 (3): 491-508.
4. SAS/INTRNET Software. [
http://support.sas.com/rnd/web/intrnet/index.html
]
5. Pittock SJ, Mayr WT, McClelland RL, Jorgensen NW, Weigand SD, Noseworthy JH, Weinshenker BG, Rodriguez M: Change in MS-related disability in a population-based cohort: A 10-year follow-up study. Neurology. 2004, 62: 51-59. 10.1159/000080499.