Geodesic
The theorem on equiconvergence for the integral operator on simplest graph with cycle
Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 8 (2008) no. 4, pp. 8-13.

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The paper deals with integral operators on the simplest geometric two-edge graph containing the cycle. The class of integral operators with range of values satisfying continuity condition into internal node of graph is described. The equiconvergence of expansions in eigen- and adjoint functions and trigonometric Fourier series is established. 
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M. Sh. Burlutskaya. The theorem on equiconvergence for the integral operator on simplest graph with cycle. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, Tome 8 (2008) no. 4, pp. 8-13. http://geodesic.mathdoc.fr/item/ISU_2008_8_4_a1/

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