@article{RSMUP_1946__15__33_0,
     author = {Zwirner, Giuseppe},
     title = {Sull{\textquoteright}equazione $y^{\prime } = \lambda f(x, y)$},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {33--39},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {15},
     year = {1946},
     zbl = {0061.17807},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1946__15__33_0/}
}