1 literature reference:

Author: Singhanouvong, D., C. Soulignavong, K. Vonghachak, B. Saadsy and T.J. Warren
Year: 1996
Title: The main wet-season migration through Hoo Som Yai, a steep-gradient channel at the great fault line on the Mekong River, Champassack Province, Southern Lao PDR.
Source: Indigenous Fishery Development Project, Fisheries Ecology Technical Report No. 4. Technical Section, Dept. of Livestock-Fisheries, Ministry of Agriculture-Forestry, Lao People's Democratic Republic. 115 p.