@article{EJDE_2008__2008__a5,
     author = {Emamizadeh,  Behrouz and Fernandes,  Ryan I.},
     title = {Optimization of the principal eigenvalue of the one-dimensional {Schr\"odinger} operator},
     journal = {Electronic journal of differential equations},
     year = {2008},
     volume = {2008},
     zbl = {1177.34104},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a5/}
}