TY  - BOOK
TI  - The Markoff and Lagrange spectra 
SN  - 9781470412579 (online)
PY  - 1989///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/surv/030 | http://dx.doi.org/10.1090/surv/030
ER  -