TY  - DATA
AU  - John, Fritz
TI  - Nonlinear wave equations, formation of singularities 
T2  - University Lecture Series, 
SN  - 9781470421557 (online)
PY  - 1990///
CY  - Providence, R.I.
PB  - American Mathematical Society
KW  - Nonlinear wave equations
KW  - Singularities (Mathematics)
N1  - Includes bibliographical references (p. 62-64)
UR  - https://doi.org/http://dx.doi.org/10.1090/ulect/002
ER  -