@article{VUU_2012_1_a11,
     author = {N. V. Rodionova},
     title = {Exact formulas for coefficients and residual of optimal approximate spline of simplest wave equation},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {144--154},
     publisher = {mathdoc},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2012_1_a11/}
}