TY  - BOOK
AU  - Callahan,James
TI  - The geometry of spacetime: an introduction to special and general relativity 
T2  - Undergraduate texts in mathematics
SN  - 0-387-98641-3
U1  - 530.11 21
PY  - 1999///
CY  - New York
PB  - Springer
KW  - Relativity (Physics)
KW  - Space and time
KW  - Algebras, Linear
KW  - Calculus of variations
KW  - Mathematical physics
KW  - Relatividad (Física)
KW  - Fisica matemática
KW  - Espacio y tiempo
N1  - Includes bibliographical references and index
ER  -