TY  - DATA
AU  - Sandifer, Charles Edward
TI  - How Euler did it 
T2  - Spectrum, 
SN  - 9781470457457 (online)
PY  - 2007///
CY  - [Washington, DC]
PB  - Mathematical Association of America
KW  - Mathematics
N1  - Includes bibliographical references and indexes
UR  - https://doi.org/10.1090/spec/052
ER  -