@article{doi:10.1001/jama.1949.02900210074031,
title = {MEthods of vitamin assay},
journal = {Journal of the American Medical Association},
volume = {139},
number = {4},
pages = {268},
year = {1949},
doi = {10.1001/jama.1949.02900210074031},
URL = { + http://dx.doi.org/10.1001/jama.1949.02900210074031},
eprint = {/data/Journals/JAMA/7565/jama_139_4_031.pdf}
}