J. Soegijo

North-south asymmetry of the equatorial ionospheric anomaly observed in East Asia during the SUNDIAL-87 campaign

T. Kikuchi, G. Walker, Y. N. Huang, 1991 .

Periodic behaviour of the ionosphere in South East Asia on storm and quiet days during the May/June SUNDIAL campaign, 1987

W. Y. Wong, T. Kikuchi, G. Walker, 1991 .