Thach, Nguyen, AND 		Canh, Pham.
" Risk assessment of flash – muddy flood and inundation of western Tam Dao mountainous region, Vinh Phuc province, Vietnam by using intergrated concept of hydrology and geomorphology" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 28 Number 1 (15 March 2012)