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Planar Symmetric Periodic Orbits in Four Dipole Problem P. G. KazantzisC. D. Desiniotis OriginalPaper Pages: 339 - 362
A simple Newtonian model for the fractal accelerating Universe P. V. Grujić OriginalPaper Pages: 363 - 374
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Analytical Study of The Resonance Caused by Solar Radiation Pressure on a Spacecraft M. I. El-Saftawy OriginalPaper Pages: 407 - 419