Journal of Geophysical Research. American Geophysical Union. Washington. 1964 vol.69 NN 1,2,3,4,5,6,7,,8,9,10.11,12,13,14,15,16,17,18,19,20,22,23,24, 1965 vol.70 NN 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23, 24, 1966 vol.71 NN 1,2,3,4,5,6,7,8,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24 1967 vol.72 NN 1,2,3,4,5,6,7,9,10,11,12,13,14,15,17,18,19,20,21,22,23,24 1968 vol.73 NN 1,2,3,4,5,6,7,8,9,10,11,12,13,22,23,24, 1969 vol.74 NN 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22, 23,24,25, 1970 vol.75 NN 1,2,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23, 24,25,26,27,28,29,30,31,32,33,34,35,36 1972 vol.77 NN 1,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,19,20,21,22,23,24, 25,26,27,28,30,31,32,33,34,35,36 1973 vol.78 NN 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,1,19,20,22,23,25, 26,27,28,29,30,31,32,33,34,35,36 Geophysical Research Letters. 1974 vol.1 N1,2,3 ,6