. 2007. Assessment of solar energy potentials for Lao People's Democratic Republic. Nakhon Pathom:Silpakorn University;
. (2007) Assessment of solar energy potentials for Lao People's Democratic Republic (รายงานผลงานวิจัย). Silpakorn University:Nakhon Pathom.
. Assessment of solar energy potentials for Lao People's Democratic Republic. Nakhon Pathom:Silpakorn University, 2007.
. (2007) Assessment of solar energy potentials for Lao People's Democratic Republic (รายงานผลงานวิจัย). Silpakorn University:Nakhon Pathom.