Gravitational capture of asteroids by gas drag. Neto, E.Vieira; Winter, O.C. — 2009 Mathematical Problems in Engineering
Collision and stable regions around bodies with simple geometric shape. Silva, A.A.; Winter, O.C.; Prado, A.F.B.A. — 2009 Mathematical Problems in Engineering
Alternative transfers to the NEOs 99942 apophis, 1994 WR12, and 2007 UW1 via derived trajectories from periodic orbits of family G. de Melo, C.F.; Macau, E.E.N.; Winter, O.C. — 2009 Mathematical Problems in Engineering
Controlling the eccentricity of polar lunar orbits with low-thrust propulsion. Winter, O.C.; Mourão, D.C.; Melo, C.F.; Macau, E.N.; Ferreira, J.L.; Carvalho, J.P.S. — 2009 Mathematical Problems in Engineering