@article{JEP_2014__1__71_0,
     author = {Giuseppe Buttazzo and Augusto Gerolin and Berardo Ruffini and Bozhidar Velichkov},
     title = {Optimal potentials for {Schr\"odinger~operators}},
     journal = {Journal de l{\textquoteright}\'Ecole polytechnique {\textemdash} Math\'ematiques},
     pages = {71--100},
     publisher = {\'Ecole polytechnique},
     volume = {1},
     year = {2014},
     doi = {10.5802/jep.4},
     zbl = {1306.49018},
     language = {en},
     url = {https://jep.centre-mersenne.org/articles/10.5802/jep.4/}
}