Lanczos,C,
Linear Differential Operators By Cornelius Lanczos - United States Dover Publications, INC. 1997 - xvi;564p.
0-486-68035-5
B33 / N7
Linear Differential Operators By Cornelius Lanczos - United States Dover Publications, INC. 1997 - xvi;564p.
0-486-68035-5
B33 / N7