@article{014211409,
title = "Studies on the vitamin B12 content of cows' milk. I. On the vitamin B12 content of cows' milk, produced by the dairy farmers in Kyoto Prefecture of Japan.",
author = "Kawashima, R. and Uesaka, S. and Mitsuhashi, M.",
year = "1961",
url = "https://eurekamag.com/research/014/211/014211409.php"
}