Index: doc/bibliography/pl.bib
===================================================================
--- doc/bibliography/pl.bib	(revision 5cd0742d08d7183f34b2f772ad25bcf94041b489)
+++ doc/bibliography/pl.bib	(revision 8fe35be6c47f9dc4cc0c7b63da8d00302dc81249)
@@ -2024,9 +2024,10 @@
 @manual{C++20Coroutine19,
     keywords	= {coroutine},
+    key		= {Coroutines},
     contributer	= {pabuhr@plg},
     title	= {Coroutines (C++20)},
     organization= {cppreference.com},
-    month	= apr,
-    year	= 2019,
+    month	= jun,
+    year	= 2022,
     note	= {\href{https://en.cppreference.com/w/cpp/language/coroutines}{https://\-en.cppreference.com/\-w/\-cpp/\-language/\-coroutines}},
 }
@@ -6991,4 +6992,19 @@
 % S
 
+@inproceedings{Imam14,
+    keywords	= {actor model, performance comparison, java actor libraries, benchmark suite},
+    contributer	= {pabuhr@plg},
+    author	= {Shams M. Imam and Vivek Sarkar},
+    title	= {Savina - An Actor Benchmark Suite: Enabling Empirical Evaluation of Actor Libraries},
+    year	= {2014},
+    publisher	= {ACM},
+    address	= {New York, NY, USA},
+    booktitle	= {Proceedings of the 4th International Workshop on Programming Based on Actors Agents \& Decentralized Control},
+    pages	= {67-80},
+    numpages	= {14},
+    location	= {Portland, Oregon, USA},
+    series	= {AGERE! '14}
+}
+
 @manual{Scala,
     keywords	= {Scala programming language},