@Article{ Dung.Griebela.Huy.ea:2017, author = {D. Dũng and M.~Griebel and V. N. Huy and C. Rieger}, title = {$\varepsilon$-dimension in infinite dimensional hyperbolic cross approximation and application to parametric elliptic {PDE}s}, journal = {Journal of Complexity}, volume = {46}, pages = {66--89}, year = {2018}, pdf = {http://wissrech.ins.uni-bonn.de/research/pub/griebel/INSPreprint1703.pdf} , note = {Also available as INS Preprint No. 1703.}, doi = {10.1016/j.jco.2017.12.001}, inspreprintnum= {1703}, eprint = {1703.00128}, annote = {article,inspreprint} }