Helmut Gfrerer,
"First-Order Characterizations of Metric Subregularity and Calmness of Constraint Set Mappings"
, Serie NuMa Report, Nummer 2010-05, Eigenverlag, Linz, 7-2012
Original Titel:
First-Order Characterizations of Metric Subregularity and Calmness of Constraint Set Mappings