1. Balasubramanian, R., Shorey, T.N.: On the equation
$$(x+1)\cdots (x+k) = (y+1)$$
(
x
+
1
)
⋯
(
x
+
k
)
=
(
y
+
1
)
$$ \cdots (y+mk)$$
⋯
(
y
+
m
k
)
. Indag. Math., N. S. 4, 257–267 (1993)
2. P. Erdős and R. L. Graham, Old and New Problems and Results in Combinatorial Number Theory, Monograph Enseign. Math., 28, Université de Genève (Geneva, 1980).
3. Fujiwara, M.: Über die obere Schranke des absoluten Betrages der Wurzelneiner algebraischen Gleichung. Tôhoku Math. J. 10, 167–171 (1916)
4. Inkeri, K.: On the Diophantine equation
$$a(x^n - 1)/(x - 1) = y^m$$
a
(
x
n
-
1
)
/
(
x
-
1
)
=
y
m
. Acta Arith. 21, 299–311 (1972)
5. Ljunggren, W.: Noen setninger om ubestemte likninger av formen
$$(x^n - 1)/(x - 1) = y^q$$
(
x
n
-
1
)
/
(
x
-
1
)
=
y
q
. Norsk. Mat. Tidskr. 25, 17–20 (1943)