If you use MultiMap for linkage OR radiation hybrid mapping in any published work, please cite the following paper:

Matise TC, Perlin M, Chakravarti A
Automated construction of genetic linkage maps using an expert system (MultiMap): a human genome linkage map.
Nature Genetics 1994 6(4):384-90


PubMed link

Feel free to give the MultiMap URL: http://compgen.rutgers.edu/multimap