@article{10_4064_sm219_2_1,
     author = {Normuxammad Yadgorov and Mukhtar Ibragimov and Karimbergen Kudaybergenov},
     title = {Geometric characterization of $L_{1}$-spaces},
     journal = {Studia Mathematica},
     pages = {97--107},
     year = {2013},
     volume = {219},
     number = {2},
     doi = {10.4064/sm219-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm219-2-1/}
}