TY  - JOUR
AU  - Hans Wilhelm Alt
AU  - C J van Duijn
TI  - A free boundary problem involving a cusp: breakthrough of salt water
JO  - Interfaces and free boundaries
PY  - 2000
SP  - 21
EP  - 72
VL  - 2
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4171/ifb/12/
DO  - 10.4171/ifb/12
ID  - 10_4171_ifb_12
ER  -