A. P. Alodzhants, G. A. Dzheĭranyan, L. P. Gevorkyan, S. M. Arakelyan, “Nonclassical states of light in tunnel-coupled optical fibers and possibilities for experimental realization in the beams of low-power high-coherence cw lasers”, Kvantovaya Elektronika, 20:8 (1993), 786–790 [Quantum Electron., 23:8 (1993), 680–684]
