Genetic erosion from modern varieties into traditional upland rice cultivars (Oryza sativa L.) in northern Thailand - Ishikawa, R.; Yamanaka, S.; Fukuta, Y.; Chitrakon, S.; Bounphanousay, C.; Kanyavong, K.; Tang, L.-H.; Nakamura, I.; Sato, T.; Sato, Y.-I. (Springer, 2006)