TY - JOUR
AU - J. Mariska
AU - Ludwig Oster
BT - Solar Physics
DA - Jan-09-1972
DO - 10.1007/BF00155123
PY - 1972
SP - 241
EP - 249
T2 - Solar Physics
TI - Solar activity and the variations of the geomagnetic Kp-index
VL - 26
SN - 0038-0938
ER -