Gospodinova, Antonina, Ilka Tsvetkova, Radostina Tsvetankova, Yuliia Mariienko, Krassimira Todorova, and Soren Hayrabedyan. 2026. “A Modification-Free Negative Control Defines the Operating Points at Which 5mC and 6mA Can Be Called from R9.4.1 Nanopore Data”. Proceedings of the Bulgarian Academy of Sciences 79 (10). Sofia, Bulgaria:1297-1308. https://doi.org/10.7546/CRABS.2026.10.05.