@article{JCA_2011_18_1_JCA_2011_18_1_a6,
     author = {A. Zachos},
     title = {A {Weighted} {Steiner} {Minimal} {Tree} for {Convex} {Quadrilaterals} on the {Two-Dimensional} {K-Plane}},
     journal = {Journal of convex analysis},
     pages = {139--152},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/JCA_2011_18_1_JCA_2011_18_1_a6/}
}