@article{RM_2002_57_3_a2,
     author = {V. N. Sorokin},
     title = {Cyclic graphs and {Ap\'ery's} theorem},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {535--571},
     publisher = {mathdoc},
     volume = {57},
     number = {3},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2002_57_3_a2/}
}