TY  - DATA
AU  - Ursell, H. D.
AU  - Young, L. C.
TI  - Remarks on the theory of prime ends 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9780821899724 (online)
PY  - 1951///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0003
ER  -