%0 Journal Article %T Hammocks %A Ringel, Claus Michael %A Vossieck, Dieter %J Proceedings of the London Mathematical Society %V s3-54 %N 2 %P 216-246 %@ 0024-6115 %D 1987-03-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve