diff --git a/_bibliography/pint.bib b/_bibliography/pint.bib
index 06947508..18397f68 100644
--- a/_bibliography/pint.bib
+++ b/_bibliography/pint.bib
@@ -6740,6 +6740,18 @@ @incollection{ShanEtAl2023
 	year = {2023},
 }
 
+@article{SongEtAl2023,
+	author = {Song, Bo and Wang, Jing-Yi and Jiang, Yao-Lin},
+	doi = {10.1007/s11075-023-01704-9},
+	issn = {1572-9265},
+	journal = {Numerical Algorithms},
+	month = {November},
+	publisher = {Springer Science and Business Media LLC},
+	title = {Analysis of a New Krylov subspace enhanced parareal algorithm for time-periodic problems},
+	url = {http://dx.doi.org/10.1007/s11075-023-01704-9},
+	year = {2023},
+}
+
 @article{TakahashiEtAl2023,
 	author = {Yasuhito Takahashi and Koji Fujiwara and Takeshi Iwashita},
 	doi = {10.1109/tmag.2023.3307498},