Yu. A. Ukolov N. A. Chekanov A. A. Gusev V. A. Rostovtsev Sergey I. Vinitsky Yoshio Uwano A REDUCE program for the normalization of polynomial Hamiltonians. 66-80 2005 166 Computer Physics Communications 1 http://dx.doi.org/10.1016/j.cpc.2004.10.010 db/journals/cphysics/cphysics166.html#UkolovCGRVU05