@misc{indiciaecca30695ae98, title = {"Thumball" Auxiliary Data-Input Device}, author = {Garner, H. Douglas and Busquets, Anthony M. and Hogge, Thomas W. and Parrish, Russell V.}, year = {1988}, url = {https://ntrs.nasa.gov/citations/19880000158}, note = {Source identifier: 19880000158} }