Frohman, MA. et. al. 1988. PNAS 85:8998-9002. Frohman, MA. 1990. In PCR Protocols, A Guide to Methods and Applications, eds. Innis, MA. et al., pp. 28-38. Academic Press. Frohman, MA. 1994. On beyond classic RACE. PCR Methods and Applications, 4:S40-S58. (This is a good article on RACE I believe). Good Luck.