Rapas Dhamvanij. (1999) A graphical user interface-based software cost estimation model. Mahidol University,:ม.ป.ท.Rapas Dhamvanij. 1999. A graphical user interface-based software cost estimation model. ม.ป.ท.:Mahidol University,;Rapas Dhamvanij. A graphical user interface-based software cost estimation model. ม.ป.ท.:Mahidol University, 1999. Print.