1. Microwave–microwave double resonance;Baker,1979
2. Novel coherence effects in microwave–microwave double resonance pulse Fourier transform spectroscopy;Bowring;Journal of Physics B: Atomic, Molecular and Optical Physics,1992
3. Basic Atomic and Molecular Spectroscopy;Hollas,2002
4. Modern Spectroscopy;Hollas,2003
5. Modern millimeter-wave resonator spectroscopy of broad lines;Krupnov;Journal of Molecular Spectroscopy,2000