@misc{indiciae73267c2bb221, title = {Optimal low-thrust, three-burn orbit transfers with large plane changes}, author = {Zondervan, K. P. and Wood, L. J. and Caughey, T. K.}, year = {1984}, url = {https://ntrs.nasa.gov/citations/19850036520}, note = {Source identifier: 19850036520} }