Badri N. Sahney,R. J. Knops,NATO Advanced Study Institute on Polynomial and Spline Approximation.NATO Advanced Study Institute on Polynomial and Spline Approximation(1978 : Calgary, Canada);Polynomial and spline approximation：theory and applications.Reidel,1979.
NATO Advanced Study Institute on Polynomial and Spline Approximation(1978 : Calgary, Canada);Polynomial and spline approximation：theory and applications
Badri N. Sahney,R. J. Knops,NATO Advanced Study Institute on Polynomial and Spline Approximation.Reidel,1979.
