@article{ZNSL_2011_390_a4,
     author = {A. Lemenant},
     title = {A presentation of the average distance minimizing problem},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {117--146},
     publisher = {mathdoc},
     volume = {390},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2011_390_a4/}
}