  Software citation has accelerated in astrophysics in the past decade,
resulting in the field now having multiple trackable ways to cite computational
methods. Yet most software authors do not specify how they would like their
code to be cited, while others specify a citation method that is not easily
tracked (or tracked at all) by most indexers. Two metadata file formats,
codemeta.json and CITATION.cff, developed in 2016 and 2017 respectively, are
useful for specifying how software should be cited. In 2020, the Astrophysics
Source Code Library (ASCL, ascl.net) undertook a year-long effort to generate
and send these software metadata files, specific to each computational method,
to code authors for editing and inclusion on their code sites. We wanted to
answer the question, "Would sending these files to software authors increase
adoption of one, the other, or both of these metadata files?" The answer in
this case was no. Furthermore, only 41% of the 135 code sites examined for use
of these files had citation information in any form available. The lack of such
information creates an obstacle for article authors to provide credit to
software creators, thus hindering citation of and recognition for computational
contributions to research and the scientists who develop and maintain software.
