@article{DE_2002_38_7_a16,
     author = {V. V. Dubrovskii and V. V. Raspopov},
     title = {An {Approximate} {Regularized} {Trace} {Formula} for an {Ordinary} {Fourth-Order} {Differential} {Operator}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {979--981},
     publisher = {mathdoc},
     volume = {38},
     number = {7},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_7_a16/}
}