Geodesic
Complex WKB method for the difference Schrödinger equation with the potential being a trigonometric polynomial
Algebra i analiz, Tome 29 (2017) no. 2, pp. 193-219 
A. A. Fedotov; E. V. Shchetka. Complex WKB method for the difference Schrödinger equation with the potential being a trigonometric polynomial. Algebra i analiz, Tome 29 (2017) no. 2, pp. 193-219. http://geodesic.mathdoc.fr/item/AA_2017_29_2_a6/
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     title = {Complex {WKB} method for the difference {Schr\"odinger} equation with the potential being a~trigonometric polynomial},
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     volume = {29},
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     url = {http://geodesic.mathdoc.fr/item/AA_2017_29_2_a6/}
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