@article{10_4064_ap103_2_7,
     author = {Arkadiusz Lewandowski},
     title = {An extension theorem with analytic singularities
 for generalized $(N,k)$-crosses},
     journal = {Annales Polonici Mathematici},
     pages = {193--208},
     publisher = {mathdoc},
     volume = {103},
     number = {2},
     year = {2012},
     doi = {10.4064/ap103-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap103-2-7/}
}