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We comment on several incorrect results given in a recent paper by Lo andWong. In particular, it is pointed out that their evaluation of the propagatorfor two coupled general driven time-dependent oscillators is not satisfactory.The correct expression can be obtained by applying an appropriatetime-dependent canonical transformation.Comment: 2 pages, no figure

Comment on “Propagator of two coupled general driven time-dependent oscillators” by C. F. Lo and Y. J. Wong