TY - JOUR AU - E. P. Valaris AU - Maria Alex. Leftaki TI - Familes FI and FII of Symmetric and Periodic Orbits of Charged Particle Moving in the Plane of Motion of two Parallel Revolving Magnetic Dipoles JO - Δελτίο της Ελληνικής Μαθηματικής Εταιρίας PY - 2001 SP - 139 EP - 151 VL - 45 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DEME_2001__45_a16/ LA - gr ID - DEME_2001__45_a16 ER -