APA (7th ed.) Citation

Baumgärtel, H. (1984). Analytic Perturbation Theory for Matrices and Operators (Reprint 2024.). De Gruyter. https://doi.org/10.1515/9783112721810

Chicago Style (17th ed.) Citation

Baumgärtel, H. Analytic Perturbation Theory for Matrices and Operators. Reprint 2024. Berlin ; Boston: De Gruyter, 1984. https://doi.org/10.1515/9783112721810.

MLA (9th ed.) Citation

Baumgärtel, H. Analytic Perturbation Theory for Matrices and Operators. Reprint 2024. De Gruyter, 1984. https://doi.org/10.1515/9783112721810.