APA (7th ed.) Citation

Baumgärtel, H. (1984). Analytic Pertubation Theory for matrices and operators.

Chicago Style (17th ed.) Citation

Baumgärtel, Helmut. Analytic Pertubation Theory for Matrices and Operators. 1984.

MLA (9th ed.) Citation

Baumgärtel, Helmut. Analytic Pertubation Theory for Matrices and Operators. 1984.

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