TY - JOUR AU - R. Stellingwerf BT - The Astrophysical Journal DA - Jan-02-1975 DO - 10.1086/153343 PY - 1975 EP - 441 T2 - The Astrophysical Journal TI - Modal stability of RR Lyrae stars UR - http://adsabs.harvard.edu/full/1975ApJ...195..441S VL - 195 SN - 0004-637X ER -