Absorption spectra.

The spectroscope and gemmology by: (Language materials, printed)

Optical absorption of impurities and defects in semiconducting crystals = hydrogen-like centres / by: (Language materials, printed)

Solid State Physics.

Minerals- Spectra.

Precious stones- Analysis.

Semiconductors- Defects.

Absorption spectra.

Optics, Optoelectronics, Plasmonics and Optical Devices.

Spectroscopy and Microscopy.

Semiconductors- Impurity distribution.

Physics.

Engineering, general.

Semiconductors- Hydrogen content.

Semiconductors- Optical properties.