http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Approximation theory, asymptotical expansions
Trudy Matematicheskogo instituta imeni V.A. Steklova. English ; Supplementary issue, 1
Trudy Instituta matematiki i mekhaniki (Ekaterinburg, Russia)