@article{RSMUP_2017__137__19_0,
     author = {Lu, Xin Yang},
     title = {Example of minimizer of the average-distance problem with non closed set of corners},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {19--55},
     publisher = {European Mathematical Society Publishing House},
     address = {Zuerich, Switzerland},
     volume = {137},
     year = {2017},
     doi = {10.4171/RSMUP/137-2},
     mrnumber = {3652867},
     zbl = {1368.49055},
     url = {http://www.numdam.org/articles/10.4171/RSMUP/137-2/}
}