@article {Lasheras2005,
 author="Francisco F. Lasheras",
 title={Ascending HNN-extensions and properly 3-realisable groups},
 journal="Bull. Austral. Math. Soc.",
 fjournal={Bulletin of the Australian Mathematical Society},
 volume="72",
 year="2005",
 number="2",
 pages="187--196",
 issn="0004-9727",
 coden="ALNBAB",
 language="English",
 date="28th February, 2005",
 classmath="57M07, 57M10, 57M20",
 publisher={AMPAI, Australian Mathematical Society},
 MRnumber="MR2183402",
 ZBLnumber="02246383",
 url="http://www.austms.org.au/Publ/Bulletin/V72P2/722-5066-Lasheras/index.shtml",
 acknowledgement={This work was partially supported by the project MTM 2004-01865.},
 abstract={ In this paper, we show that any ascending HNN-extension of a finitely presented group is properly 3-realisable. We recall that a finitely presented group $G$ is said to be properly 3-realisable if there exists a compact 2-polyhedron $K$ with $\pi _1(K) \cong G$ and whose universal cover $\widetilde {K}$ has the proper homotopy type of a (PL) 3-manifold (with boundary). }
}