BibTex format
@article{PRETZEL:1985:10.1007/BF00337921,
author = {PRETZEL, O},
doi = {10.1007/BF00337921},
journal = {ORDER-A JOURNAL ON THE THEORY OF ORDERED SETS AND ITS APPLICATIONS},
pages = {25--40},
title = {ON GRAPHS THAT CAN BE ORIENTED AS DIAGRAMS OF ORDERED SETS},
url = {http://dx.doi.org/10.1007/BF00337921},
volume = {2},
year = {1985}
}