Zaikov, A., et al. “WEANING OF PIKEPERCH (SANDER LUCIOPERCA L.) FRY FROM LIVE FOOD TO ARTIFICIAL FEED USING CHIRONOMIDS AND MINCED FISH MEAT”. Bulgarian Journal of Animal Husbandry, vol. 52, no. 6, Dec. 2015, pp. 58-61, https://agriacad.eu/ojs/index.php/bjah/article/view/377.