Rodica Simion. Trees with 1-factors and oriented trees. Discrete Mathematics, 88(1):93-104, 1991. [doi]
@article{Simion91,
title = {Trees with 1-factors and oriented trees},
author = {Rodica Simion},
year = {1991},
doi = {10.1016/0012-365X(91)90061-6},
url = {http://dx.doi.org/10.1016/0012-365X(91)90061-6},
researchr = {https://researchr.org/publication/Simion91},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {88},
number = {1},
pages = {93-104},
}