Book Chapter
Yurchenko, S. N.;
Thiel, W.;
Carvajal, M.;
Lin, H.;
Jensen, P. Rotation-Vibration Motion of Pyramidal XY₃ Molecules Described in the Eckart Frame: The Calculation of Intensities with Application to NH₃. In
ADVANCES IN QUANTUM CHEMISTRY; Advances in Quantum Chemistry; ELSEVIER ACADEMIC PRESS INC: SAN DIEGO, 2005; pp 209–238.