Duality in nonconvex approximation and optimizationIvan Singer · First published 2005 · Latest edition 2006Open the Tome
The theory of best approximation and functional analysisIvan Singer · First published 1974 · Latest edition 1987Open the Tome
Banach space theory and its applicationsA. Pietsch, Nicolae Popa, Ivan Singer · First published 1983Open the Tome
Best approximation in normed linear spaces by elements of linear subspacesIvan Singer · First published 1970Open the Tome
Cea mai bună aproximare în spații vectoriale normate prin elemente din subspații vectorialeIvan Singer · First published 1967Open the Tome
Der ziṭṭenlehrerIvan Andreevich Krylov, Israel ben Meir Zeev Singer · First published 1890Open the Tome
