H Sagawa, T Mori, K Abe, S Chakrabarti, Y Fujii, Y Higashi, S Ishimoto, Y Kurihara, A Maki, P Mani, T Nozaki, T Omori, P Perez, Y Sakai, Y Sugimoto, Y Takaiwa, S Terada, K Tsuchiya, A Bacala, R Imlay, P Kirk, W Marterer, RR McNeil, W Metcalf, CP Cheng, ZP Mao, Y Yan, YT Xu, HS Zhou, YC Zhu, A Abashian, K Gotow, F Kajino, F Naito, F Avignone, R Childers, C Darden, J Edwards, S Lusin, C Rosenfeld, S Wilson, D Johnson, M Frautschi, H Kagan, R Kass, CG Trahern, HY Lee, Winston Ko, RL Lander, K Maeshima, RL Malchow, D Saroff, K Sparks, MCS Williams, A Aldritch, J Green, IH Park, S Sakamoto, F Sannes, S Schnetzer, R Stone, S Trentalange, D Zimmerman, K Miyano, H Miyata, M Ogawa, Y Yamashita, D Blanis, A Bodek, H Budd, R Coombes, S Eno, CA Fry, H Harada, YH Ho, YK Kim, T Kumita, SL Olsen, R Poling, NM Shaw, A Sill, EH Thorndike, K Ueno, HW Zheng, H Asakura, K Eguchi, H Itoh, S Kobayashi, A Murakami, K Toyoshima, JS Kang, HJ Kim, SK Kim, SS Myung, EJ Kim, GN Kim, D Son, H Kozuka, S Matsumoto, H Otsuki, T Sasaki, T Takeda, R Tanaka, R Chiba, K Hanaoka, S Igarashi, M Miyashita, H Murata, H Yokota, Y Ishi, T Ishizuka, T Maruta, K Ohta, AMY Collaboration,
Measurements of R and a search for heavy-quark production in e + e - annihilation at √s =50 and 52 GeV Physical Review Letters. ,vol. 60, pp. 93- 96 ,(1988) ,
10.1103/PHYSREVLETT.60.93