@article{10_4171_dm_171,
     author = {Wolfgang K\"uhnel},
     title = {Tight embeddings of simply connected $4$-manifolds},
     journal = {Documenta mathematica},
     pages = {401--412},
     year = {2004},
     volume = {9},
     doi = {10.4171/dm/171},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/171/}
}