http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
katalog sobranii︠a︡ Rossiĭskoĭ nat︠s︡ionalʹnoĭ biblioteki
Rossiĭskai︠a︡ nat︠s︡ionalʹnai︠a︡ biblioteka
[sostaviteli T.V. Akopi︠a︡n ... I.A. Snigireva (otvetstvennyĭ sostavitelʹ) and others ; redaktory T.V. Akopi︠a︡n, M.A. Lukovskai︠a︡, I.A. Snigireva ; nauchnyĭ redaktor i rukovoditelʹ raboty G.V. Mikheeva].
Includes correspondence to L.N. Zami︠a︡tina.