- Author: Phoha Shashi P., Phoha Vir V., Ray Asok
- Language: English
- Year: 2005
- Author: Asok Ray Xi Wang (auth.) Asok Ray Vir V. Phoha Shashi P. Phoha (eds.)
- Language: English
- Year: 2005
- Author: Asok Ray Vir V. Phoha Shashi Phoha
- Language: English
- Year: 2004