@article{doi:10.1001/jama.1969.03160180119021,
author = {Schumacher HR},
title = {THe frustum sign revisited},
journal = {JAMA},
volume = {209},
number = {5},
pages = {773-774},
year = {1969},
doi = {10.1001/jama.1969.03160180119021},
URL = { + http://dx.doi.org/10.1001/jama.1969.03160180119021},
eprint = {/data/Journals/JAMA/8482/jama_209_5_021.pdf}
}