TY - GEN T1 - Narrow muon bundles from muon pair production in rock T2 - arXiv PY - 1999/11/25 AU - Kudryavtsev VA AU - Korolkova EV AU - Spooner NJC ED - DO - DOI: 10.48550/arxiv.hep-ph/9911493 Y2 - 2024/12/22 ER -