N. V. Krylov - Lectures on Elliptic and Parabolic Equations in Sobolev Spaces Published: 2008-08-20 | ISBN: 0821846841 | PDF + DJVU | 357 pages | 16.66 MB
John H. Hubbard, Beverly H. West - Differential Equations: A Dynamical Systems Approach: Ordinary Differential Equations Published: 1991 | ISBN: 1461269520 | PDF | 350 pages | 9.05 MB