I&#x27;ve also had issues replicating ODE models from papers in the past. I assume you&#x27;ve tried contacting the authors to ask for clarification and haven&#x27;t had a reply? If so, I think you should submit all 3, because without any original code available, your effort is likely to be representative of anyone else&#x27;s. (And it&#x27;s easily vettable as it&#x27;ll be on GitHub). The onus is then on the original author to point out how (if at all) your implementation differs from theirs.