Affiliation: | (1) Institute of the Physics of the Earth, Russian Academy of Sciences, Bol'shaya Gruzinskaya 10, 123 810 Moscow, Russia;(2) Dept of Mathematics, Indian Institute of Science, 560 012 Bangalore, India;(3) Centre for Aeronautical System Studies and Analyses, New Thippasandra P.O., 560 075 Bangalore, India |