@article{10_4064_ap_24_3_331_341,
     author = {Jan Bochenek},
     title = {On the inverse problem of the {Sturm-Liouville} type for a linear elliptic partial differential equation with constant coefficients of the second order},
     journal = {Annales Polonici Mathematici},
     pages = {331--341},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1970},
     doi = {10.4064/ap-24-3-331-341},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-24-3-331-341/}
}