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中国科学院数学与系统科学研究院期刊网
ISSN 1439-8516 CN 11-2039/O1
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Composite Integers
n
for Which
ψ
(
n
)|
n
-1
William D. BANKS, Florian LUCA
Acta Mathematica Sinica . 2007, (
10
): 1915 -1918 . DOI: 10.1007/s10114-005-0731-1