D. Oktavianti, L. Santoso, and S. Suparmono, “Partial Substitution of Fish Meal with Petek (Leiougnathus equulus) Flour in Commercial Feed of Patin Siam (Pangasius hypopthalamus) Fry”, aqs, vol. 4, no. 1, pp. 315–322, Oct. 2015.