APA (7th ed.) Citation

Kuzhel', S. A., Nizhnik, L. P., Кужіль, С. О., & Нижник, Л. П. (2007). Singularly perturbed self-adjoint operators in scales of Hilbert spaces. Institute of Mathematics, NAS of Ukraine.

Chicago Style (17th ed.) Citation

Kuzhel', S. A., L. P. Nizhnik, С. О Кужіль, and Л. П Нижник. Singularly Perturbed Self-adjoint Operators in Scales of Hilbert Spaces. Institute of Mathematics, NAS of Ukraine, 2007.

MLA (8th ed.) Citation

Kuzhel', S. A., et al. Singularly Perturbed Self-adjoint Operators in Scales of Hilbert Spaces. Institute of Mathematics, NAS of Ukraine, 2007.

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