Peter Engel. The enumeration of four-dimensional polytopes. Discrete Mathematics, 91(1):9-31, 1991. [doi]
@article{Engel91:0,
title = {The enumeration of four-dimensional polytopes},
author = {Peter Engel},
year = {1991},
doi = {10.1016/0012-365X(91)90159-Y},
url = {http://dx.doi.org/10.1016/0012-365X(91)90159-Y},
researchr = {https://researchr.org/publication/Engel91%3A0},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {91},
number = {1},
pages = {9-31},
}