@article{10_4064_sm_104_3_221_228,
     author = {Zefer Nurlu},
     title = {Bessaga's conjecture in unstable {K\"othe} spaces and products},
     journal = {Studia Mathematica},
     pages = {221--228},
     publisher = {mathdoc},
     volume = {104},
     number = {3},
     year = {1993},
     doi = {10.4064/sm-104-3-221-228},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-104-3-221-228/}
}