Before revision: "Co-marketing" began in 1981 when Koichi Shimizu, a professor at Josai University, published an article in a magazine published by Nikkei Advertising Research Institute in Japan.
After revision: "Co-marketing" began in 1981 when Koichi Shimizu, a professor at Josai University, published an article in a bulletin published by Nikkei Advertising Research Institute in Japan.