%0 Journal Article %A Ernie G. Kalnins %A Willard Miller Jr. %T Structure theory for extended Kepler–Coulomb 3D classical superintegrable systems %J Symmetry, integrability and geometry: methods and applications %D 2012 %V 8 %U http://geodesic.mathdoc.fr/item/SIGMA_2012_8_a33/ %G en %F SIGMA_2012_8_a33