Josef Schicho,
"A Degree Bound for the Parameterization of a Rational Surface"
, Serie RISC Report Series, Nummer 97-24, RISC JKU, Hagenberg, 1997, J. Schicho, RISC-Linz Report Series No. 97-24
Original Titel:
A Degree Bound for the Parameterization of a Rational Surface