Collect. Czech. Chem. Commun.
1974, 39, 1313-1317
https://doi.org/10.1135/cccc19741313
A HMO study of hyperconjugation, charge-transfer spectra of substituted silafluorenes
R. Ponec, V. Chvalovský, E. A. Černyšev, S. A. Ščepinov and T. L. Krasnova