These are the original Cocon publications:
Lindel, T., Junker, J., & Kock, M. (1997). COCON: From NMR correlation data to molecular constitutions. Journal Of Molecular Modeling, 3(May), 364–368. DOI
Lindel, T., Junker, J., & Kock, M. (1999). 2D-NMR-guided constitutional analysis of organic compounds employing the computer program COCON. European Journal Of Organic Chemistry, 573–577. DOI