Rudin, Walter (1991). 《Functional analysis》. International Series in Pure and Applied Mathematics (영어) 2판. New York, NY: McGraw-Hill. MR1157815. Zbl0867.46001.
Rudin, Walter (1991). 《Functional analysis》. International Series in Pure and Applied Mathematics (영어) 2판. New York, NY: McGraw-Hill. MR1157815. Zbl0867.46001.