ヨーゼフ・ルートヴィヒ・ラーベ
1 2 3 O'Connor, John J.; Robertson, Edmund F., "Joseph Ludwig Raabe", MacTutor History of Mathematics archive, University of St Andrews.
↑ Bourbaki, N. (2004), Elements of Mathematics Functions of a Real Variable, Springer, p. 318, ISBN 9783642593154.