Thomas Andrew Ivey, J. M. Landsberg - Cartan for Beginners: Differential Geometry Via Moving Frames and Exterior Differential Systems Published: 2003-11 | ISBN: 0821833758 | PDF + DJVU | 378 pages | 36 MB
W. N. Everitt, L. Markus - Elliptic Partial Differential Operators and Symplectic Algebra Published: 2003-03-01 | ISBN: 0821832352 | PDF + DJVU | 111 pages | 6.99 MB