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Mediterranean Journal of Mathematics > 2015 > 12 > 3 > 1009-1017
Integral Equations and Operator Theory > 2013 > 77 > 4 > 581-598
Positivity > 2008 > 12 > 2 > 375-386
Mediterranean Journal of Mathematics > 2015 > 12 > 3 > 1009-1017
Integral Equations and Operator Theory > 2013 > 77 > 4 > 581-598
Positivity > 2008 > 12 > 2 > 375-386