RECENT PAPERS Spielberg's homepage
C*-algebras for categories of paths asociated to the Baumslag-Solitar groups preprint, 2011, arXiv:1111.6927. Groupoids and C*-algebras for categories of paths preprint, 2011, arXiv:1111.6924. (with Menassie Ephrem) K-theory of C*-algebras of directed graphs Houston J. Math. 37 (2011), no. 2, 435-447. Non-cyclotomic Presentations of Modules and Prime-order Automorphisms of Kirchberg Algebras J. Reine Angew. Math. 613 (2007), 211-230. Graph-based models for Kirchberg algebras J. Operator Theory 57 (2007), no. 2, 347-374. Weak semiprojectivity for purely infinite C*-algebras Canad. Math. Bull. v. 50 no. 3 (2007), 460-468. Semiprojectivity for certain purely infinite C*-algebras Trans. Amer. Math. Soc. 361 (2009), no. 6, 2805-2830. A functorial approach to the C*-algebras of a graph Internat. J. Math. 13 (2002), no. 3, 245-277.