TY  - BOOK
AU  - Boothby, William M.
TI  - An introduction to differentiable manifolds and Riemannian geometry [2nd rev. ed.] 
SN  - 0121160513
U1  - 516.36 
PY  - 2003///
CY  - Amsterdam
PB  - Academic Press
KW  - Differentiable manifolds
ER  -