@article {IOPORT.50136521,
    author       = {Czarnecki, Marc-Olivier},
    title        = {Asymptotic control of pairs of oscillators coupled by a repulsion, with nonisolated equilibria II: The singular case},
    year         = {2004},
    journal      = {SIAM J. Control and Optimization},
    volume       = {42},
    number       = {6},
    pages        = {2145-2171},
    doi          = {10.1137/S036301290342320X},
    identifier   = {50136521},
}