Differen︠t︡sialʹnye uravneni︠i︡a i funk︠t︡sionalʹnye prostranstva : sbornik stateĭ : posv︠i︡ashchaets︠i︡a pam︠i︡ati akademika Serge︠i︡a Lʹvovicha Soboleva - Nikolʹskiĭ, S. M. (Sergeĭ Mikhaĭlovich), 1905-2012 (Trudy Matematicheskogo instituta imeni V.A. Steklova, 1990)