@article{AFM_1998_23_2_a7,
     author = {GaryG. Gundersen and Enid M. Steinbart and Shupei Wang},
     title = {Solutions of nonhomogeneous linear differential equations with exceptionally few zeros},
     journal = {Annales Fennici Mathematici},
     pages = {429--452},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_1998_23_2_a7/}
}