TY  - DATA
AU  - Turner, W.
TI  - Rock blocks 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470405618 (online)
PY  - 2009///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0947
ER  -