Karaev , A. K., Gorlova , O. S., Ponkratov, V. V., Vasyunina , M. L., Masterov , A. I., Zambaev, H. N., & Gueva , L. H. (2024). Dynamic Interrelation between Aggregated Revenues and Expenditures of Regional-Level Budgets of Federal States: A Time-Frequency Approach to Analysis. Qubahan Academic Journal, 4(3), 33–44. https://doi.org/10.48161/qaj.v4n3a549