BibTex format
@article{PRETZEL:1977:10.1016/0097-3165(77)90046-2,
author = {PRETZEL, O},
doi = {10.1016/0097-3165(77)90046-2},
journal = {JOURNAL OF COMBINATORIAL THEORY SERIES A},
pages = {146--152},
title = {DIMENSION OF PARTIALLY ORDERED SETS},
url = {http://dx.doi.org/10.1016/0097-3165(77)90046-2},
volume = {22},
year = {1977}
}