@article {Bi:2024pkk,
	title = {Long-lived sterile neutrino searches at future muon colliders},
	journal = {Phys. Rev. D},
	volume = {111},
	number = {7},
	year = {2025},
	pages = {075001},
	doi = {10.1103/PhysRevD.111.075001},
	author = {Bi, Qi and Guo, Jinhui and Jia Liu and Yan Luo and Wang, Xiao-Ping}
}
