@article {223,
	title = {Parametrizations for triangular G^k spline surfaces of low degree},
	journal = {ACM Transactions on Graphics},
	volume = {24},
	year = {2006},
	pages = {1281-1293},
	author = {Hartmut Prautzsch and Georg Umlauf}
}
@article {204,
	title = {A G^1 and a G^2 subdivision scheme for trinagular nets},
	journal = {International Journal on Shape Modelling},
	volume = {6},
	year = {2000},
	pages = {21-35},
	author = {Hartmut Prautzsch and Georg Umlauf}
}
@conference {225,
	title = {Improved triangular subdivision schemes},
	booktitle = {Proceedings of the CGI {\textquoteright}98},
	year = {1999},
	author = {Hartmut Prautzsch and Georg Umlauf},
	editor = {F.-E.~Wolter and N.M.~Patrikalakis}
}
@conference {224,
	title = {Triangular G^2 splines},
	booktitle = {Curve and Surface Design},
	year = {1999},
	publisher = {Vanderbilt University Press},
	organization = {Vanderbilt University Press},
	author = {Hartmut Prautzsch and Georg Umlauf},
	editor = {P.-L.~Laurent and P.~Sablonniere and L.L.~Schumaker}
}
@article {205,
	title = {A G^2 subdivision algorithm},
	journal = {Computing},
	volume = {13},
	year = {1998},
	pages = {217-224},
	author = {Hartmut Prautzsch and Georg Umlauf}
}
