Association of nucleotide-sequence polymorphism in the 5’‑flanking regions of bovine casein genes with casein content in cow’s milk Malgorzata Szymanowska, Eulalia Siadkowska, Marek Lukaszewicz and Lech Zwierzchowski Lait, 84 6 (2004) 579-590 DOI: 10.1051/lait:2004030