+
+@misc{ pnas-data-archival,
+ author = PNAS,
+ title = {{PNAS} Information for Authors},
+ year = 2013,
+ month = feb,
+ url = {http://www.pnas.org/site/misc/iforc.pdf},
+ excerpt = {From \emph{Journal Policies (x)}:
+ \begin{quote}
+ \emph{Materials and Data Availability.} To allow others to
+ replicate and build on work published in PNAS, authors must
+ make materials, data, and associated protocols available to
+ readers. \ldots Data not shown and personal communications
+ cannot be used to support claims in the work. Authors are
+ encouraged to use SI to show all neces- sary data. Authors are
+ encouraged to deposit as much of their data as possible in
+ publicly accessible databases. \ldots
+ \end{quote}
+ },
+}
+
+@misc{ nature-data-archival,
+ author = NAT,
+ title = {Guide to Publication Policies of the Nature Journals},
+ year = 2013,
+ month = apr,
+ day = 30,
+ url = {http://www.nature.com/authors/gta.pdf},
+ excerpt = {From \emph{Sharing data sets}
+ \begin{quote}
+ A condition of publication in a Nature journal is that authors
+ are required to make materials, data and associated protocols
+ promptly available to others without undue qualifications.
+
+ Data sets must be made freely available to readers from the date
+ of publication, and must be provided to editors and
+ peer-reviewers at submission, for the purposes of evaluating the
+ manuscript.
+ \end{quote}
+ },
+}