@article{10_37236_11377,
     author = {Han Wang and Zhi-Wei Sun},
     title = {Proof of a conjecture involving derangements and roots of unity},
     journal = {The electronic journal of combinatorics},
     year = {2023},
     volume = {30},
     number = {2},
     doi = {10.37236/11377},
     zbl = {1508.05013},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/11377/}
}