Killing, Wilhelm: ... W. Killing Observationes ad theoriam transformationum continuarum pertinentes. In: . Jg.1886. 1886
 

Index lectionum in Lyceo Regio Hosiano Brunsbergensi per ... instituendarum → ... Per Aestatem ... Anni MDCCCLXXXVI. → ... W. Killing Observationes ad theoriam transformationum continuarum pertinentes