Solvability of Arithmetic Function Equation S ( SL ( n ) ) = φ2( n )
ZHANG Lixia，ZHAO Xiqing，GUO Rui
Journal of Jianghan University (Natural Science Edition) . 2016, (1): 18 -21 .  DOI: 10.16389/j.cnki.cn42-1737/n.2016.01.003