1. Yu. B. Lishmanov and L. N. Maslov,Opioid Neuropeptides, Stress, and Adaptive Protection of the Heart [in Russian], Tomsk (1994).
2. E. V. Montsevichyute-Eringene,Pat. Fiziol., No. 4, 71–78 (1964).
3. V. M. Pokrovskii, O. E. Osadchii, I. L. Cherednik,et al., Dokl. Ross. Akad. Nauk,328, No. 2, 267–270 (1993).
4. V. M. Pokrovskii, I. L. Cherednik, O. E. Osadchii,et al., Ross. Fiziol. Zh.,79, No. 7, 49–54 (1993).
5. V. Brantl and H. Teschemacher,Naunyn Schmiedebergs Arch. Pharmacol.,306, 301–304 (1979).