@misc{1166296, author = {John P Vinti}, title = {Mean motions in conditionally periodic separable systems:}, year = {1960}, month = {1960-11-01 05:11:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.RPT.6998}, language = {en}, }