V. Dzhunushaliyev, “Non-perturbative quantization à la Heisenberg: zero flux tube between quark and quark”, Rec.Contr.Phys., vol. 61, no. 2, pp. 80–84, Oct. 2017, Accessed: Oct. 21, 2026. Available: https://bph.kaznu.kz/index.php/zhuzhu/article/view/865