TY - GEN T1 - Longitudinal oscillations in density stratified and expanding solar waveguides T2 - arXiv PY - 2012/04/18 AU - Luna-Cardozo M AU - Verth G AU - Erdélyi R ED - DO - DOI: 10.48550/arxiv.1204.4201 Y2 - 2025/12/11 ER -