TY - JOUR T1 - Longitudinal oscillations in density stratified and expanding solar waveguides JO - Astrophysical Journal PY - 2012/04/01 AU - Luna-Cardozo M AU - Verth G AU - Erd茅lyi R ED - DO - DOI: 10.1088/0004-637X/748/2/110 VL - 748 IS - 2 Y2 - 2025/06/21 ER -