“Use of Waste Energy by Adding Shing (Heteropneustes fossilis, Bloch 1797) into Pangus (Pangasianodon hypophthalmus, Sauvage, 1878) Pond”, J. Environ. Sci. & Natural Resources, vol. 6, no. 1, pp. 209–216, Feb. 2015, doi: 10.3329/jesnr.v6i1.22067.