TY  JOUR
TI  Complexes of activity on the Sun in solar cycle 21
KW  solar activity
KW  activity complexes
KW  flares
KW  North-South asymmetry
JO  Solnechno-Zemnaya Fizika
AU  Yazev, S.A.
AU  Ulianova, M.M.
AU  Isaeva, E.S.
PY  2021
IS  7
PB  INFRA-M Academic Publishing LLC.