@article{10_4064_sm172_3_1,
     author = {S. A. Shkarin},
     title = {Compact perturbations of linear differential
equations in locally convex spaces},
     journal = {Studia Mathematica},
     pages = {203--227},
     publisher = {mathdoc},
     volume = {172},
     number = {3},
     year = {2006},
     doi = {10.4064/sm172-3-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm172-3-1/}
}