Krafchak, T. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Petra, J.-M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Davidson, B. D. (Syracuse Univ. NY, United States)
Chen, G.-S. (JPL Pasadena, CA, United States)