As you have included the osemosys code in wesm/model_wesm.txt and psm/model_psm.txt, you should include the Apache 2.0 license, and also explain in the file and the readme that these are a derivative of the original OSeMOSYS framework, cite the paper, and link back to the OSeMOSYS/OSeMOSYS_GNU_MathProg repository.
As you have included the osemosys code in
wesm/model_wesm.txt
andpsm/model_psm.txt
, you should include the Apache 2.0 license, and also explain in the file and the readme that these are a derivative of the original OSeMOSYS framework, cite the paper, and link back to the OSeMOSYS/OSeMOSYS_GNU_MathProg repository.