The expansion of negative powers of the mutual distance between two planets Osman M. KamelAdel S. Soliman OriginalPaper Pages: 197 - 200
Spectral studies of the time-series of the geomagnetic activities M. DizerA. Ozguc OriginalPaper Pages: 211 - 220
Spectrophotometric study of comet Bradfield (1987s) B. S. RautelaB. B. Sanwal OriginalPaper Pages: 221 - 225
On the instability region around the 5 : 3 Jovian resonance Silvia FernándezCristián Beaugé OriginalPaper Pages: 227 - 232
Methods of Venus radiolocation map synthesis using strip images of VENERA-15 and VENERA-16 space stations I. BocksteinP. ChochiaM. Kronrod OriginalPaper Pages: 233 - 259
Secular love and tidal numbers of synchronously orbiting satellites M. Burša OriginalPaper Pages: 261 - 265
A determination of secular terms in first-order planetary theory Osman M. Kamel OriginalPaper Pages: 267 - 269
Determination of secular terms in general planetary theory Osman M. Kamel OriginalPaper Pages: 271 - 273
Conditionally-periodic solutions of the Hamiltonian systems with multiple resonance M. K. M. AhmedM. H. A. Yousef OriginalPaper Pages: 289 - 298
Color enhanced imagery of major geological features on Mars Kent D. Trego Letter To The Editor Pages: 299 - 306
A note on the gravitational field of Phobos Nils Aall Barricelli Letter To The Editor Pages: 307 - 309