Citation
If you publish research that uses vmd you have to cite it as follows:
Humphrey, W., Dalke, A., & Schulten, K. (1996). VMD: Visual molecular dynamics. Journal of Molecular Graphics, 14(1), 33–38. https://doi.org/10.1016/0263-7855(96)00018-5
For more information, visit the official How to Cite VMD webpage