APA (7th ed.) Citation

Sorjonen, P. (1970). On extensions of isometric operators in a Pontrjagin space.

Chicago Style (17th ed.) Citation

Sorjonen, Pekka. On Extensions of Isometric Operators in a Pontrjagin Space. Jyväskylä, 1970.

MLA (9th ed.) Citation

Sorjonen, Pekka. On Extensions of Isometric Operators in a Pontrjagin Space. 1970.

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