Zagorodny А.G., and L.N. Christophorov. “Polya’s Theorem and Migration + Capture of a Quantum Particle”. Reports of the National Academy of Sciences of Ukraine, no. 11 (November 28, 2016): 44–51. Accessed June 20, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/12863.