1. The General Rules for the Gastric Cancer Study in Surgery and Pathology, Japanese Research Society for Gastric Cancer. Jpn. J. Surg., 11: 127–139, 1981.
2. Hirono, M., Matsuki, K., Nakagami, K., Makihara, H., Shimura, K., Niimoto, M. and Hattori, T.: Cytological studies on intraperitoneal free cancer cells of gastric cancer at laparotomy I. Correlation with histological type and prognosis. Hiroshima Igaku (J. Hiroshima Med. Ass.) 34: 250–253, 1981 (in Japanese).
3. Papanicolaou, G.N.: Atlas of Exfoliative Cytology. Harvard Univ. Press, Cambridge, Mass., 1954.
4. Nakajima, T., Oikawa, T., Ohashi, I., Harajima, S., Hirata, M., Nakamura, K. and Kajitani, T.: Clinical significance of peritoneal cytology during the operation in advanced gastric cancer. Gann no Rinsho (Jpn. J. Cancer. Clin.) 23; 27–34, 1977 (in Japanese with English summary).
5. Iitsuka, Y., Kaneshima, S., Tanida, O., Takeuchi, T. and Koga, S.: Intraperitoneal free cancer cells and their viability in gastric cancer. Cancer 44: 1476–1480, 1979.