@article{10_14708_cm_v22i2_6027,
     author = {J. Musia{\l}ek},
     title = {On some three-harmonic potential for circular ring},
     journal = {Commentationes Mathematicae},
     pages = { 305--306},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1981},
     doi = {10.14708/cm.v22i2.6027},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v22i2.6027/}
}