@inproceedings{Tuneu:2025X1, author = "Tuneu, Jordi and Santos, Eva and Filip, Peter", title = "{Unraveling the Unexpected Seasonal Variation of Multi-Muon Events at NO$\nu$A}", doi = "10.22323/1.501.0421", booktitle = "Proceedings of 39th International Cosmic Ray Conference {\textemdash} PoS(ICRC2025)", year = 2025, volume = "501", pages = "421" }