Potential of Hard Candy Containing Spray-Dried Vernonia cinerea Extract with Total Phenolic Compounds, Total Flavonoids and Nicotine Replacement as an Anti-Smoking Aid, Kanthain, Rungtiwa, Singhatong Supawatchara, Natakankitkul Surapol, Dechsupa Nathupakorn, and Leelarungrayub Jirakrit , Pharmacognosy Journal, February  2020, Volume 12, Issue 1, p.35-43, (2020)