Inverse Problems, Tomography, and Image Processing By C. Athanasiadis, A. G. Ramm, I. G. Stratis (auth.), Alexander G. Ramm (eds.) 1998 | 258 Pages | ISBN: 1489919007 | PDF | 13 MB
Spectral Theory and Differential Operators (Oxford Mathematical Monographs), 2nd Edition by David Edmunds, Des Evans 2018 | ISBN: 0198812051 | English | 624 pages | PDF | 12 MB
Nikolay D. Kopachevskii, Selim G. Krein - Operator Approach to Linear Problems of Hydrodynamics: Volume 1: Self-adjoint Problems for an Ideal Fluid Published: 2012-10-25 | ISBN: 3034895259, 3764354062 | PDF + DJVU | 384 pages | 32.83 MB
John B. MacMillan, "Problems in Organic Structure Determination: A Practical Approach to NMR Spectroscopy" English | 2015 | ISBN: 1498719627, 113845592X | PDF | pages: 774 | 111.3 mb