Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
A.G. Petrov,Invariant normalization of non-autonomous Hamiltonian systems,Journal of Applied Mathematics and Mechanics,0021-8928,Elsevier BV,2004-01,68,3,357-367,https://cir.nii.ac.jp/crid/1360861711390495744,https://doi.org/10.1016/s0021-8928(04)00049-8