@unpublished{ Li.Shi:2017, author = {Guanglian Li and Ke Shi }, title = {{Upscaled HDG methods for Brinkman equations with high-contrast heterogeneous coefficient}}, year = {2017}, annote = {article,inspreprint}, note = {INS preprint No. 1716.}, inspreprintnum= {1716}, personid = {341}, pdf = {http://wissrech.ins.uni-bonn.de/research/pub/li/INSPreprint1716.pdf} }