@article{article251999c2,
title   = {Dynamics of two planets in the 3/2 mean-motion resonance: application to the planetary system of the pulsar PSR B1257+12},
author = {Callegari Júnior, Nelson and Ferraz-Mello, Sylvio and Michtchenko, Tatiana Alexandrovna},
year = {2006},
journal   = {Celestial Mechanics and Dynamical Astronomy}
}