@article{MAN_1985__273_164050, author = {Martin Scharlemann and Steven Bleiler}, title = {Tangles, {Property} {P,} and a {Problem} of {J.} {Martin.}}, journal = {Mathematische Annalen}, pages = {215--226}, publisher = {mathdoc}, volume = {273}, year = {1985}, url = {http://geodesic.mathdoc.fr/item/MAN_1985__273_164050/} }