@book{248315,
	author = {Liu, S.K.},
	title = {Effects of dietary crude protein on the growth performance, carcass characteristics and serum biochemical indexes of lueyang black-boned chickens from seven to twelve weeks of age},
	url = {http://www.scielo.br/pdf/rbca/v17n1/1516-635X-rbca-17-01-00103.pdf
}
}