@unpublished{Griebel.Li.2019, author = {Michael Griebel and Guanglian Li}, title = {On the Numerical Approximation of the {Karhunen-Loève} Expansion for Lognormal Random Fields}, annote = {article, inspreprint}, note = {Available as INS Preprint No. 1904}, inspreprintnum = {1904}, year = {2019} }