@article{GT_2001_5_1_a14,
     author = {Rourke, Colin and Sanderson, Brian},
     title = {The compression theorem {II:} directed embeddings},
     journal = {Geometry & topology},
     pages = {431--440},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2001},
     doi = {10.2140/gt.2001.5.431},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2001.5.431/}
}