W.Y.C. Chen and E.X.W. Xia,
The ratio monotonicity of the q-derangement numbers,
Discrete Math. 311(6) (2011) 393-397.
Cited by
W.Y.C. Chen and E.X.W. Xia,
The ratio monotonicity of the q-derangement numbers,
Discrete Math. 311(6) (2011) 393-397.
Cited by