@article{10_4064_sm_45_3_309_317,
     author = {Thomas Boehme},
     title = {On power series in the differentiation operator},
     journal = {Studia Mathematica},
     pages = {309--317},
     publisher = {mathdoc},
     volume = {45},
     number = {3},
     year = {1973},
     doi = {10.4064/sm-45-3-309-317},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-45-3-309-317/}
}