APA (7th ed.) Citation

(1974). On the approximation of continuously differentiable functions in hilbert spaces.

Chicago Style (17th ed.) Citation

On the Approximation of Continuously Differentiable Functions in Hilbert Spaces. 1974.

MLA (8th ed.) Citation

On the Approximation of Continuously Differentiable Functions in Hilbert Spaces. 1974.

Warning: These citations may not always be 100% accurate.