Journal of Differential Equations, vol. 255, no. 6, page. 1109 - 1131, 2013-09-15
Communication in Partial Differential Equations, vol. 38, no. 7, page. 1235 - 1255, 2013-07-03
Potential Analysis, vol. 38, no. 2, page. 589 - 610, 2013-02