Presbitero, Alan L. “THE CALCULATION OF WATER RELEASE POLICY FOR BALOG-BALOG (PHILIPPINES) SINGLE MULTIPURPOSE RESERVOIR SYSTEM USING DDDP ANALYTICAL TECHNIQUE: I. MODEL DEVELOPMENT”. Annals of Tropical Research, vol. 13, no. 1-4, Oct. 1991, pp. 38-58, https://atr.vsu.edu.ph/article/view/616.