(2002). Symmetry and perturbation theory: Proceedings of the International Conference (SPT 2002). New Jesey, NJ: World Scientific.
Dyfyniad Arddull ChicagoSymmetry and Perturbation Theory: Proceedings of the International Conference (SPT 2002). New Jesey, NJ: World Scientific, 2002.
Dyfyniad MLASymmetry and Perturbation Theory: Proceedings of the International Conference (SPT 2002). New Jesey, NJ: World Scientific, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.