@article{MAN_1975__215_162697,
     author = {Man Kam Kwong},
     title = {Lp-Perturbations of {Second} {Order} {Linear} {Differential} {Equations.}},
     journal = {Mathematische Annalen},
     pages = {23--34},
     publisher = {mathdoc},
     volume = {215},
     year = {1975},
     zbl = {0288.34013},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__215_162697/}
}