1. Polymers of N-vinylpyrrolidone: Synthesis, characterization and uses;Haaf;Polym. J.,1985
2. Manufacture of fine chemicals from acetylene;Li,2016
3. Amphiphilic poly-N-vinylpyrrolidones: synthesis, properties and liposome surface modification;Torchilin;Biomaterials,2001
4. Cohen, J. M., Biss, R. B., “Process for the production of pure vinyl pyrrolidone”. United States Pat., 5329021 (1994).
5. Sugiura, H., Inaoka, T., Nozaki, S., Oka, Y., “Production method of N-vinyl-2-pyrrolidone”. United States Pat., 0218344 (2011).