1. Practical Astronomy with your Calculator;Duffett-Smith,1979
2. Explanatory Supplement to the Astronomical Ephemeris;HM Nautical Almanac Office,1961
3. Geophysical coordinate transformations;Russell;Cosmic Electrodyn.,1971
4. Initial ISEE magnetometer results: magnetopause observations;Russell;Space Sci. Rev.,1978
5. Magnetopause and boundary layer;Sonnerup,1976