@Article{ Hackbusch.Uschmajew:2017, author = {Wolfgang Hackbusch and Andr{\'e} Uschmajew}, title = {On the interconnection between the higher-order singular values of real tensors}, journal = {Numer. Math.}, fjournal = {Numerische Mathematik}, volume = {135}, year = {2017}, number = {3}, pages = {875--894}, annote = {journal}, doi = {10.1007/s00211-016-0819-9}, note = {INS Preprint No. 1520}, inspreprintnum= {1520} }