1. Solar Distillation;Malik,1982
2. Doctoral Thesis;Tanaka,1985
3. H. Tanaka, Doctoral thesis, University of the Ryukyus, Okinawa, Japan, 2001, 4–24, 33–46.
4. Solar water distillation: the roof type still and a multiple effect diffusion still;Dunkle,1961
5. The construction and performance of a three effect wick type tilted solar still;Cooper;Sun Work,1967