[ 1] 乐茂华,徐广善. K4 单群的几个 Diophanti ne方程问题[ J] . 中国科学A 辑, 1996, 26( 9) : 769- 773.[ 2] LE Mao - hua. A Note on Per fect Powers of the Form xm- 1+ + x + 1[ J] . Acta. Arith. , 1995, 69: 91- 98.[ 3] BUGEAUD Y,MIGNOTTE M. Sur Lquation Di ophantienne ( xn- 1) / ( x- 1) = yq [ J] . C. R. Acad Sci Paris Sr. I. Math. ,1999, 328: 741- 744.[ 4] LJUNGGREN W.Noen Setninger Om Ubestemte Liknin ger Av Formen ( xn- 1) / ( x- 1)= yq[ J] .NorskMat. Tidsskr,19 43, 2 5: 1 7- 20.[ 5] NAGELL T. Note Sur Lquati on Ind termin e ( xn- 1) / ( x - 1)= yq[ J] . NorskMat. Tidsskr, 1920, ( 2) : 75- 78.[ 6] BENNETT M A. Rational Approximation to Algebraic Numbers of Small Height: The Diophantine Equation | a xn- byn| = 1[ J] .Trans. Amer . Math. Soc. , 2001, to Appear.[ 7] BUGEAUD Y. Linear Forms in P- adic Logari thms and the Diophan tine Equation ( xn- 1) / ( x - 1) = yq[ J] . Math. Proc. Cam -bridge Philos. Soc. , 1999, 127: 373- 381.