@article{10_4064_sm147_3_1,
     author = {B. Yousefi},
     title = {Unicellularity of the multiplication
operator on {Banach} spaces of formal power series},
     journal = {Studia Mathematica},
     pages = {201--209},
     year = {2001},
     volume = {147},
     number = {3},
     doi = {10.4064/sm147-3-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm147-3-1/}
}