@article{doi:10.1001/jama.1949.02910150072034,
title = {PRojective methods},
journal = {Journal of the American Medical Association},
volume = {141},
number = {15},
pages = {1106},
year = {1949},
doi = {10.1001/jama.1949.02910150072034},
URL = { + http://dx.doi.org/10.1001/jama.1949.02910150072034},
eprint = {/data/Journals/JAMA/7193/jama_141_15_034.pdf}
}