@article{JCA_2017_24_2_JCA_2017_24_2_a4,
     author = {H. V. Ngai and N. H. Tron and P. N. Tinh},
     title = {Directional {H\"older} {Metric} {Subregularity} and {Application} to {Tangent} {Cones}},
     journal = {Journal of convex analysis},
     pages = {417--457},
     year = {2017},
     volume = {24},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2017_24_2_JCA_2017_24_2_a4/}
}