Cita APA

Amster, P., Haddad, J., Ortega, R., & Ureña, A. (2011). Periodic motions in forced problems of Kepler type. Web

Citación estilo Chicago

Amster, P., J. Haddad, R. Ortega, and A.J Ureña. Periodic Motions in Forced Problems of Kepler Type. 2011.

Cita MLA

Amster, P., J. Haddad, R. Ortega, and A.J Ureña. Periodic Motions in Forced Problems of Kepler Type. 2011.