@article{JRAM_1988__388_153044,
     author = {K. Athanassopoulos and P. Strantzalos},
     title = {On minimal sets in 2-manifolds.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {206--211},
     publisher = {mathdoc},
     volume = {388},
     year = {1988},
     zbl = {0647.58027},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1988__388_153044/}
}