中国科学院数学与系统科学研究院期刊网
New Results on Nonexistence of Perfect p-Ary Sequences and Almost p-Ary Sequences
Hai Ying LIU, Ke Qin FENG
Acta Mathematica Sinica . 2016, (1): 2 -10 .  DOI: 10.1007/s10114-015-4344-z