@article{koornwinder:2009:asf,
    author = {Koornwinder, Tom H.},
     title = {The {A}skey scheme as a four-manifold with corners},
   journal = {Ramanujan J.},
  fjournal = {Ramanujan Journal. An International Journal Devoted to the
              Areas of Mathematics Influenced by Ramanujan},
    volume = {20},
      year = {2009},
    number = {3},
     pages = {409–439},
      issn = {1382-4090},
     coden = {RAJOF9},
   mrclass = {33C45},
  mrnumber = {2574781 (2011b:33021)},
mrreviewer = {Jos{\'e} Luis L{\'o}pez},
       doi = {10.1007/s11139-009-9208-7},
     links = {\URL[FullText]{http://dx.doi.org/10.1007/s11139-009-9208-7}},
     zblno = {1195.33053}}