@Article{jue:18f,
  author = 	 {K. Birner and B. J\"uttler and A. Mantzaflaris},
  title = 	 {Bases and dimensions of ${C}^1$-smooth iogeometric splines on volumetric two-patch domains},
  journal = 	 {Graphical Models},
  year = 	 {2018},
  volume = 	 {99},
  doi=           {10.1016/j.gmod.2018.08.001},
  pages = 	 {46-56}
}