共 27 条
[2]
CHAPMAN S, 1940, GEOMAGNETISM, P213
[3]
CHAPMAN S, 1943, MON NOT R ASTRON SOC, V103, P117
[5]
GOLD T, 1956, INT ASTRON UNION S, V6, P275
[6]
HARVEY JW, 1969, THESIS U COLO
[7]
Kotov V. A., 1970, Izvestiya Krymskoi Astrofizicheskoi Observatorii, V41-42, P67
[9]
NESS NF, 1970, P INT C COSMIC RAYS, V11, P41
[10]
Newkirk G, 1968, IAU S, V35, P379