@Article{jue:13h,
  author = 	 {C. Giannelli and B. J\"uttler},
  title = 	 {Local and Adaptive Refinement with Hierarchical {B}-Splines},
  journal = 	 {Bolletino della Unione Matematica Italiana, Series IX},
  year = 	 {2013},
  volume = 	 {VI},
  number = 	 {3},
  pages = 	 {735-740}}