De Marchi S., Vianello M., Sommariva A. (2014) "Multivariate Christoffel functions and hyperinterpolation
" Dolomites Research Notes on Approximation, 7(Special_Issue), 26-33. DOI: 10.14658/PUPJ-DRNA-2014-Special_Issue-6
multivariate Christoffel functions
multivariate Christoffel functions