Hu, Huabi; Zhao, Ping; Hu, Sigui; Yang, Mei Characterizations and properties of semaphore codes. (Chinese. English summary) Zbl 1240.94049 J. Jilin Univ., Sci. 48, No. 4, 583-587 (2010). MSC: 94A45 20M35 × Cite Format Result Cite Review PDF
Hu, Huabi; Zhao, Ping; Hu, Sigui; Liu, Xiaochun A property of semaphore code. (Chinese. English summary) Zbl 1240.94048 J. Guizhou Norm. Univ., Nat. Sci. 28, No. 2, 66-68 (2010). MSC: 94A45 20M35 × Cite Format Result Cite Review PDF