Yoon, S. K., Choi, S. W., Lee, C. D., Sun, H. S., Park, D. H., Kim, B. S., . . . Kim, S. M. (1987). Pure Signet Ring Cell Type Early Gastric Carcinoma with Extensive Lymph Node Metastases: —A Case Report—. Korean J Intern Med.

Yoon, Seung Kew, Sang Wook Choi, Chang Don Lee, Hee Sik Sun, Doo Ho Park, Boo Sung Kim, Mi Kyung Jee, Seok Jin Gang, and Sun Moo Kim. "Pure Signet Ring Cell Type Early Gastric Carcinoma With Extensive Lymph Node Metastases: —A Case Report—." Korean J Intern Med 1987.

Yoon, Seung Kew, et al. "Pure Signet Ring Cell Type Early Gastric Carcinoma With Extensive Lymph Node Metastases: —A Case Report—." Korean J Intern Med 1987.