@misc{indiciaeefc7d7fedc40, title = {Recent progress in high specific impulse thermo-ionic acceleration.}, author = {Ducati, A. C. and Giannini, G. M. and Muehlberger, E.}, year = {1965}, url = {https://ntrs.nasa.gov/citations/19650033883}, note = {Source identifier: 19650033883} }