Alecu, B., Lozin, V. V., Quiroz, D. A., Rabinovich, R., Razgon, I., & Zamaraev, V. (2024). The Treewidth and Pathwidth of Graph Unions. SIAM Journal on Discrete Mathematics, 38(1), 261-276. https://doi.org/10.1137/22m1524047