@misc{indiciaed0cf4faf07e4, title = {Space Trajectory Error Analysis Program (STEAP) for halo orbit missions. Volume 2: Programmer's manual}, author = {Byrnes, D. V. and Carney, P. C. and Underwood, J. W. and Vogt, E. D.}, year = {1974}, url = {https://ntrs.nasa.gov/citations/19740018195}, note = {Source identifier: 19740018195} }