@article{RSMUP_1983__69__267_0,
     author = {Oliveri, U.},
     title = {Un teorema sui polinomi differenziali omogenei in $R^2$},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {267--270},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {69},
     year = {1983},
     zbl = {0546.35010},
     language = {it},
     url = {http://archive.numdam.org/item/RSMUP_1983__69__267_0/}
}