Pornpimol Bungkomkhun และผู้แต่งคนอื่นๆ. (2012) Grid-based supervised clustering algorithm using greedy and gradient descent methods to build clusters. National Institute of Development Administration:ม.ป.ท.Pornpimol Bungkomkhun และผู้แต่งคนอื่นๆ. 2012. Grid-based supervised clustering algorithm using greedy and gradient descent methods to build clusters. ม.ป.ท.:National Institute of Development Administration;Pornpimol Bungkomkhun และผู้แต่งคนอื่นๆ. Grid-based supervised clustering algorithm using greedy and gradient descent methods to build clusters. ม.ป.ท.:National Institute of Development Administration, 2012. Print.