add references in readme and separate license files for reduced asn1-…

…files

README.md

@@ -204,3 +204,45 @@ docker run --rm ghcr.io/ika-rwth-aachen/etsi_its_messages:ros
 ## Acknowledgements
 
 This work is accomplished within the projects 6GEM (FKZ 16KISK036K), AUTOtech.agil (FKZ 01IS22088A), and AIthena (101076754). We acknowledge the financial support for the projects by the Federal Ministry of Education and Research of Germany (BMBF) :de:. Moreover this work has received funding from the European Union’s Horizon Europe Research and Innovation Programme :eu: under Grant Agreement No 101076754 - AIthena project.
+
+## References
+Used software packages in the `etsi_its_messages` repository and their license.
+
+*For full license details please refer to the specific license files of the specific packages.*
+
+*  [asn1c](https://github.com/vlm/asn1c)
+    ```
+    BSD 2-Clause License
+    Copyright (c) 2003-2017  Lev Walkin <[email protected]> and contributors.
+    All rights reserved.
+    ```
+
+*  [asn1tools](https://github.com/eerimoq/asn1tools)
+    ```
+    MIT License
+    Copyright (c) 2017-2019 Erik Moqvist
+    ```
+
+*  [ETSI ITS ASN1](https://forge.etsi.org/rep/ITS/asn1)
+    ```
+    BSD 3-Clause License
+    Copyright (c) ETSI
+    ``` 
+
+*  [GeographicLib](https://github.com/geographiclib/geographiclib)
+    ```
+    MIT License
+    Copyright (c) 2008-2023, Charles Karney
+    ``` 
+        
+*  [ROS](https://www.ros.org/)
+    ```
+    BSD 3-Clause License
+    All rights reserved.
+    ```
+
+*  [ROS 2](https://www.ros2.org/)
+    ```
+    Apache 2.0 License
+    All rights reserved.
+    ```

asn1/reduced/cam/LICENSE

@@ -0,0 +1,23 @@
+Copyright 2019 ETSI
+
+Redistribution and use in source and binary forms, with or without 
+modification, are permitted provided that the following conditions are met:
+1. Redistributions of source code must retain the above copyright notice, 
+   this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice, 
+   this list of conditions and the following disclaimer in the documentation 
+   and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors 
+   may be used to endorse or promote products derived from this software without 
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
+OF THE POSSIBILITY OF SUCH DAMAGE.

asn1/reduced/denm/LICENSE

@@ -0,0 +1,23 @@
+Copyright 2019 ETSI
+
+Redistribution and use in source and binary forms, with or without 
+modification, are permitted provided that the following conditions are met:
+1. Redistributions of source code must retain the above copyright notice, 
+   this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice, 
+   this list of conditions and the following disclaimer in the documentation 
+   and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors 
+   may be used to endorse or promote products derived from this software without 
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
+OF THE POSSIBILITY OF SUCH DAMAGE.