Microwave Remote Sensing of Ionized Air. - Shaolin Liao; Nachappa Gopalsami; Alexander Heifetz; Thomas W. Elmer; Peter Fiflis; Eugene R. Koehl; Hual Te Chien; Apostolos C. Raptis (IEEE Geosci. Remote. Sens. Lett., 2011)

Passive Millimeter-Wave Dual-Polarization Imagers. - Shaolin Liao; Nachappa Gopalsami; Thomas W. Elmer; Eugene R. Koehl; Alexander Heifetz; Keenan Avers; Eric Dieckman; Apostolos C. Raptis (IEEE Trans. Instrum. Meas., 2012)

Millimeter Wave Doppler Sensor for Nondestructive Evaluation of Materials. - Shaolin Liao; Sasan Bakhtiari; Thomas W. Elmer; B. Lawrence; Eugene R. Koehl; Nachappa Gopalsami; Apostolos C. Raptis (CoRR, 2020)