Geodesic
The convergence of the method of lines for the elliptic equation $\Delta^3u(x,y)=f(x,y)$
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Functional analysis and theory of functions. 6, Tome 129 (1969) no. 3, pp. 106-119 
T. G. Zhantasov. The convergence of the method of lines for the elliptic equation $\Delta^3u(x,y)=f(x,y)$. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Functional analysis and theory of functions. 6, Tome 129 (1969) no. 3, pp. 106-119. http://geodesic.mathdoc.fr/item/UZKU_1969_129_3_a9/
@article{UZKU_1969_129_3_a9,
     author = {T. G. Zhantasov},
     title = {The convergence of the method of lines for the elliptic equation $\Delta^3u(x,y)=f(x,y)$},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {106--119},
     year = {1969},
     volume = {129},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_1969_129_3_a9/}
}
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