@misc{indiciaef076c8ccb3be,
  title = {Program document for Energy Systems Optimization Program 2 (ESOP2). Volume 1: Engineering manual},
  author = {Hamil, R. G. and Ferden, S. L.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770018687},
  note = {Source identifier: 19770018687}
}