Update README.md

README.md

@@ -32,10 +32,22 @@ configs:
     path: data/train-*
 ---
 
-- The dataset has been gather from assigments of Klokánek competition from 2004-2022.
+- The dataset has been gather from assigments of (Klokánek)[https://matematickyklokan.net/] competition from 2004-2022.
 - I have done rule based filtering to filter-out picture related assigments
-- The category denote the difficulty of the task, please
-- The difficulty should range from elementary school to high school.
+- The category denote the difficulty of the task, the range is elementary school to high-school. Check example test from Klokánek for more information.
 - If you find an error in solution or find that the assigment is unsolvable, please contact me.
 - If you have any question please contact me at kydlicek.hynek@gmail.com
+- The dataset is realesed under non-comercial licence CC BY-NC-SA
+
+
+Cite:
+```
+@misc{klokanek-dataset,
+  author = {Hynek Kydlíček, David Nocar et al.},
+  title = {Klokánek dataset},
+  year = {2023},
+  publisher = {Hynek Kydlíček},
+  howpublished = "\url{https://huggingface.co/datasets/hynky/klokan-qa}"
+}
+```