Update citations README.md

README.md

@@ -23,7 +23,17 @@ Copyright (c) Radost Waszkiewicz (2021) - python port.
 # How to cite
 
 Waszkiewicz, R., Bartczak M., Kolasa K. and Lisicki M. *Pychastic: Precise Brownian Dynamics using 
-Taylor-Ito integrators in Python*; Sci-Post (submitted) (2022)
-
-Zuk, P. J., B. Cichocki, and P. Szymczak *GRPY - an accurate bead method for calculation of hydrodynamic
-properties of rigid biomacromolecules*; Biophys. J. (submitted) (2017)
+Taylor-Ito integrators in Python*; SciPost Physics Codebases (2023)
+
+```bibtex
+@article{Waszkiewicz_2023,
+	title        = {Pychastic: Precise Brownian dynamics using Taylor-It{\=o} integrators in Python},
+	author       = {Waszkiewicz, Radost and Bartczak, Maciej and Kolasa, Kamil and Lisicki, Maciej},
+	year         = 2023,
+	journal      = {SciPost Physics Codebases},
+	pages        = {11}
+}
+```
+**and**
+
+Zuk, P. J., Cichocki, B. and Szymczak, P. *GRPY: an accurate bead method for calculation of hydrodynamic properties of rigid biomacromolecules*; Biophys. J. (2018)