@article{10_4064_cm115_1_9,
     author = {Gennadiy Averkov and Horst Martini},
     title = {On area and side lengths  of triangles in normed planes},
     journal = {Colloquium Mathematicum},
     pages = {101--112},
     year = {2009},
     volume = {115},
     number = {1},
     doi = {10.4064/cm115-1-9},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm115-1-9/}
}