@article{MM2_1995__86_3_156043,
     author = {Igor Nikolaev},
     title = {The {Tangent} cone of an {Aleksandrov} space of curvature.},
     journal = {Manuscripta mathematica},
     pages = {137--148},
     publisher = {mathdoc},
     volume = {86},
     number = {3},
     year = {1995},
     zbl = {0822.53043},
     url = {http://geodesic.mathdoc.fr/item/MM2_1995__86_3_156043/}
}