@article{NANO_2011_2_4_a3,
     author = {X. Y. Lu},
     title = {Bifurcation condition for optimal sets of the average distance functional},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {51--60},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2011_2_4_a3/}
}