diff --git a/publist.org b/publist.org
index 19c56af..40bbeab 100644
--- a/publist.org
+++ b/publist.org
@@ -10,24 +10,31 @@
      BioInformatics and BioEngineering October 25-27, 2021,
      Kragujevac, Serbia.
 
-  2. Artiom Alhazov, Rudolf Freund, Sergiu Ivanov: /P systems with
+  2. Artiom Alhazov, Rudolf Freund, Sergiu Ivanov, Marion Oswald:
+     /Relations between Control Mechanisms for Sequential Grammars./
+     Fundam. Informaticae 181(2-3): 239-271 (2021)
+
+  3. Artiom Alhazov, Rudolf Freund, Sergiu Ivanov: /P systems with
      limited number of objects./ J. Membr. Comput. 3(1): 1-9 (2021)
 
-  3. Jérémie Pardo, Sergiu Ivanov, Franck Delaplace: /Sequential
+  4. Artiom Alhazov, Rudolf Freund, Sergiu Ivanov: /When catalytic
+     P systems with one catalyst can be computationally complete./
+     J. Membr. Comput. 3(3): 170-181 (2021)
+
+  5. Jérémie Pardo, Sergiu Ivanov, Franck Delaplace: /Sequential
      reprogramming of biological network fate./
      Theor. Comput. Sci. 872: 97-116 (2021)
 
-  4. Elio Nushi, Victor-Bogdan Popescu, José Ángel Sánchez Martín,
-     Sergiu Ivanov, Eugen Czeizler, Ion Petre: /Network modeling
-     methods for precision medicine./ CoRR abs/2104.09206 (2021)
-
-  5. Rémi Segretain, Sergiu Ivanov, Laurent Trilling, Nicolas Glade:
+  6. Rémi Segretain, Sergiu Ivanov, Laurent Trilling, Nicolas Glade:
      /A Methodology for Evaluating the Extensibility of Boolean
      Networks’ Structure and Function./ In: Benito R.M., Cherifi C.,
      Cherifi H., Moro E., Rocha L.M., Sales-Pardo M. (eds) Complex
-     Networks & Their Applications IX. COMPLEX NETWORKS
-     1. Studies in Computational Intelligence, vol 944. Springer,
-     Cham. (2021)
+     Networks & Their Applications IX. COMPLEX NETWORKS 1. Studies in
+     Computational Intelligence, vol 944. Springer, Cham. (2021)
+
+  7. Elio Nushi, Victor-Bogdan Popescu, José Ángel Sánchez Martín,
+     Sergiu Ivanov, Eugen Czeizler, Ion Petre: /Network modeling
+     methods for precision medicine./ CoRR abs/2104.09206 (2021)
 
 * 2020
   1. Franck Delaplace, Sergiu Ivanov: /Bisimilar Booleanization of