@ARTICLE{FormigaMoraes:jaesa08,
  title = {Orbital Characteristics of Artificial Satellites in Resonance and the Correspondent Geopotencial Coefficients},
  author = {Jorge Kennety. S. Formiga and Rodolpho Vilhena de Moraes},
  pages = {33--42},
  journal = {Journal of Aerospace Engineering, Sciences and Applications},
  volume = {1},
  number = {2},
  ISSN = {2236-577X},
  year = {2008}
}