Synchrony of planting and proportions of susceptible varieties affect rice tungro disease epidemics in the Philippines - Cabunagan, R.C.; Castilla, N.; Coloquio, E.L; Tiongco, E.R.; Truong, X.H; Fernandez, J.; Du, M.J; Zaragosa, B.; Hozak, R.R; Savary, S.; Azzam, O. (Elsevier, 2001)