@Article{ MR2801264, author = {Merino, Pedro and Neitzel, Ira and Tr{\"o}ltzsch, Fredi}, title = {On linear-quadratic elliptic control problems of semi-infinite type}, journal = {Appl. Anal.}, fjournal = {Applicable Analysis. An International Journal}, volume = {90}, year = {2011}, number = {6}, pages = {1047--1074}, issn = {0003-6811}, mrclass = {49M25 (65N30 90C34)}, mrnumber = {2801264 (2012e:49068)}, mrreviewer = {Hans Benker}, doi = {10.1080/00036811.2010.489187}, url = {http://dx.doi.org/10.1080/00036811.2010.489187}, annote = {journal} }