A. A. Baranov, S. V. Ermak, È. A. Sagitov, R. V. Smolin, V. V. Semenov, “Signal correlation in the tandem of a spin oscillator and microwave frequency discriminator with laser-pumped alkali atoms”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 42:4 (2016), 38–45; Tech. Phys. Lett., 42:2 (2016), 186–190
S. V. Ermak, M. V. Petrenko, V. V. Semenov, “Coherent population trapping on $^{87}$Rb atoms in small-size absorption cells with buffer gas”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 42:3 (2016), 29–37; Tech. Phys. Lett., 42:2 (2016), 127–130