1. AASP, 1996. Final Report: ODA Support for Aquaculture at the Asian Institute of Technology (Dec. 1992–May 1995) and Aquaculture Support Project (Jun.–Nov. 1995). Agricultural and Aquatic Systems Program (AASP), School of Environment, Resources and Development, Asian Institute of Technology, 126 pp.
2. Ambali, A.J.D., 1990. Effect of hapa size on conditioning of broodstock, (Oreochromis niloticus) in fertilized earthen ponds. M. Sc. Thesis. Asian Institute of Technology. 101 pp.
3. Bevis, R., 1994. The effect of artificial nests on reproductive performance in the Nile tilapia (Oreochromis niloticus, L.) spawned in net hapas. M. Sc. Thesis. Asian Institute of Technology. 111 pp.
4. A new record! Tilapia fry sale reached nearly 10 million a month;Bhujel;AASP Newsl.,1997
5. A review of strategies for the management of Nile tilapia (Oreochromis niloticus) broodfish in seed production systems, especially hapa-based systems;Bhujel;Aquaculture,2000