[345] Journ. für Math. 94.
[346] Berliner Ber. 1882.
[347] Münchener Abh. 14.
[348] Journ. für Math. 6.
[349] Irish Trans. 22, I. T.
[350] Giorn. di Matem. 2.
[351] Göttinger Nachr. 1875.
[352] Giorn. di Matem. 21.
[353] Journ. Éc. polyt. 48.
[354] Bologna Mem. IV, 3.