@article{10_4064_sm161_1_4,
     author = {T. Terzio\u{g}lu and M. Yurdakul and V. Zahariuta},
     title = {Factorization of unbounded operators on {K\"othe} spaces},
     journal = {Studia Mathematica},
     pages = {61--70},
     publisher = {mathdoc},
     volume = {161},
     number = {1},
     year = {2004},
     doi = {10.4064/sm161-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm161-1-4/}
}