[1]
A. Stoneham, Theory of Defects in Solid State, McGrow Hill, London (1968).
Google Scholar
[2]
N. A. Kulagin, D. T. Sviridov, Methods of Calculation of Electronic Structure of Free and Impurity Ions, Nauka, Moscow (1986).
Google Scholar
[3]
A. N. Men', Ju. P. Vorob'ev, G. I. Chufanov, Physical-Chemical Properties of NonStoichiometrical Oxides, Nauka, Leningrad (1973).
Google Scholar
[4]
A. Abragam, B. Bleaney, Electron Paramagnetic Resonance of Transition Ions, Claredon, Oxford (1970).
Google Scholar
[5]
N. A. Kulagin, D. T. Sviridov, Introduction to Doped Crystals Physics, High School Publ., Kharkov (1990).
Google Scholar
[6]
A. Apanasenko, N. Kulagin, J. Appl. Spectroscopy, 35 (1981), p.135.
Google Scholar
[7]
N. Kulagin, L. Litvinov, Cryst. Res. Technology, 20 (1985), p.1667.
Google Scholar
[8]
N. Kulagin, D. Sviridov, J. Physics (London), C17 (1984), p.4539.
Google Scholar
[9]
N. Kulagin, G. Trojan-Golovjan, Sov. Opt. Spectr. 74 (1993), p.141.
Google Scholar
[10]
L. Krutova, N. Kulagin, V. Sandulenko, A. Sandulenko, Phys. Sol. Stat., 31 (1989), p.170.
Google Scholar
[11]
N. Kulagin, M. Ozerov, V. Rokhmanova, J. Appl. Spectr., 46 (1987), p.612.
Google Scholar
[12]
T. Bessonova, Problems of Nuclear Physics, 16 (1982), p.3.
Google Scholar
[13]
N. Kulagin, J. Alloys and Compos., 300-301 (2000), p.348.
Google Scholar
[14]
J. -C. Krupa, N. A. Kulagin, Eds., Physics of Laser Crystals, Kluwer, Brussels (2003).
Google Scholar
[15]
N. Kulagin, A. Ovechkin, E. Antonov, J. Appl Spectr., 43 (1985), p.478.
Google Scholar
[16]
E. V. Zharikov, V. V. Osiko, I. A. Sherbakov, Izv. AS USSR, Seria fizika, 48 (1984), p.1330.
Google Scholar
[17]
N. Kulagin, V. Sandulenko, Phys. Sol. Stat., 31 (1989), p.243.
Google Scholar
[18]
A. A. Kaminsky, Ed., Laser Crystals, Nauka, Moscow (1975).
Google Scholar
[19]
N. Kulagin, A. Apanasenko, N. Kazakov, J. Appl. Spectr., 38 (1983), p.988.
Google Scholar
[20]
A. Apanasenko, N. Kulagin, J. Appl. Spectr., 35 (1981), p.134.
Google Scholar
[21]
N. Kulagin, Phys. Sol. Stat., 27 (1987), p. (2039).
Google Scholar
[22]
N. Kulagin, D. Sviridov, Dokl. AS USSR, 266 (1982), p.616.
Google Scholar
[23]
N. Kulagin, Phys. Sol. Stat., 44 (2002), p.484.
Google Scholar