TY  - BOOK
AU  - Strogatz, Steven
TI  - The Calculus of friendship: What a teacher and a student learned about life while corresponding abouth math
SN  - 9780691150383
U1  - G 510.922 STR 
PY  - 2011///
CY  - United Kingdon
PB  - Princeton University press: UK
ER  -