Software Citation: State of the Practice and Challenges DruskatStephan 2019 Invited talk at David E. Bernholdt, Mozhgan Kabiri Chimeh, Anshu Dubey, Carina Haupt, Michael A. Heroux, Catherine Jones, Guido Juckeland, Jared O’Neal, Jurriaan H. Spaaks, organizers, Birds of a Feather session on Software Engineering for Computational Science and Engineering on Supercomputers, in <em>ISC High Performance 2019</em> (ISC 2019), Frankfurt, Germany, June 2019. <a href="https://betterscientificsoftware.github.io/swe-cse-bof/2019-06-isc19-bof/">https://betterscientificsoftware.github.io/swe-cse-bof/2019-06-isc19-bof/</a>.