1. McClymer, J.
, “Reactionless Drive with Conservation of Momentum,” arXiv e-prints (2019): arXiv-1902, 2019.
2. Higgins, A.J.
, “Reconciling a Reactionless Propulsive Drive with the First Law of Thermodynamics,” arXiv preprint arXiv:1506.00494, 2015.
3. Lobo, F.S.N. and
Visser, M.
, “Fundamental Limitations on "Warp Drive" Spacetime,” Classical and Quantum Gravity 21 (2004): 5871-5892, doi:10.1088/0264-9381/21/24/011.
4. Smith, W.D.
, “Nuclear Powered and Reactionless Rockets,” NECI tech. report, 1999. NECI, 4 Independence Way, Princeton NJ 08540. Patent applied for, 1999.
5. White, H.
et al.
, “Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum,” Aerospace Research Central (17 November 2016), doi:10.2514/1.B36120.