@article{EMJ_2010_1_3_a7,
     author = {A. P. Shveidel},
     title = {Star-shapedness and co-star-shapedness of finite unions and intersections of closed half-spaces},
     journal = {Eurasian mathematical journal},
     pages = {134--147},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2010_1_3_a7/}
}