Markus Passenbrunner, Aleksei Shadrin,
"On almost everywhere convergence of orthogonal spline projections with arbitrary knots"
, in Journal of Approximation Theory, Vol. 180, Seite(n) 77-89, 2014, ISSN: 0021-9045
Original Titel:
On almost everywhere convergence of orthogonal spline projections with arbitrary knots