add refs to the DESCRIPTION

DESCRIPTION

@@ -25,13 +25,15 @@ Authors@R:
 Description: Provides functions for working with primary
     event censored distributions and 'Stan' implementations for use in Bayesian
     modeling. Primary event censored distributions are useful for modeling
-    delayed reporting scenarios in epidemiology and other fields. It also
-    provides support for arbitrary delay distributions, a range of common
-    primary distributions, and allows for truncation and secondary event
-    censoring to be accounted for. A subset of common distributions also
-    include analytical solutions, allowing for faster computation.
-    In addition, it provides multiple methods for fitting primary event
-    censored distributions to data via optional dependencies.
+    delayed reporting scenarios in epidemiology and other fields (Charniga et
+    al. (2024) <doi:10.48550/arXiv.2405.08841>). It also provides support for
+    arbitrary delay distributions, a range of common primary distributions, and
+    allows for truncation and secondary event censoring to be accounted for
+    (Park et al. (2024) <doi:10.1101/2024.01.12.24301247>). A subset of
+    common distributions also have analytical solutions implemented, allowing
+    for faster computation. In addition, it provides multiple methods for
+    fitting primary event censored distributions to data via optional
+    dependencies.
 License: MIT + file LICENSE
 URL: https://primarycensored.epinowcast.org, https://github.com/epinowcast/primarycensored/
 BugReports: https://github.com/epinowcast/primarycensored/issues