Matthias R. Engelhardt, Thomas B. Preußer. An easy counting lemma. Discrete Applied Mathematics, 257:175-185, 2019. [doi]
@article{EngelhardtP19,
title = {An easy counting lemma},
author = {Matthias R. Engelhardt and Thomas B. Preußer},
year = {2019},
doi = {10.1016/j.dam.2018.10.001},
url = {https://doi.org/10.1016/j.dam.2018.10.001},
researchr = {https://researchr.org/publication/EngelhardtP19},
cites = {0},
citedby = {0},
journal = {Discrete Applied Mathematics},
volume = {257},
pages = {175-185},
}