Michel Habib, Rolf H. Möhring. On some complexity properties of N-free posets and posets with bounded decomposition diameter. Discrete Mathematics, 63(2-3):157-182, 1987. [doi]
@article{HabibM87,
title = {On some complexity properties of N-free posets and posets with bounded decomposition diameter},
author = {Michel Habib and Rolf H. Möhring},
year = {1987},
doi = {10.1016/0012-365X(87)90006-9},
url = {http://dx.doi.org/10.1016/0012-365X(87)90006-9},
researchr = {https://researchr.org/publication/HabibM87},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {63},
number = {2-3},
pages = {157-182},
}