@article{10_2298_FIL1919401J,
     author = {Tomasz Jakubowski and Sebastian Sydor},
     title = {Schr\"odinger perturbations with concave control function},
     journal = {Filomat},
     pages = {6401 },
     year = {2019},
     volume = {33},
     number = {19},
     doi = {10.2298/FIL1919401J},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL1919401J/}
}