1. Al-Salam, W.A.: q-Bernoulli numbers and polynomials. Math. Nachr. 17, 239–260 (1959)
2. Alzer, H.: Sharp bounds for the ratio of q-gamma functions. Math. Nachr. 222, 5–14 (2001)
3. Alzer, H., Grinshpan, A.Z.: Inequalities for the gamma and q-gamma functions. J. Approx. Theory 144(1), 67–83 (2007)
4. Andrews, G.E., Foata, D.: Congruences for the q-secant numbers. Eur. J. Comb. 1(4), 283–287 (1980)
5. Andrews, G.E., Gessel, I.: Divisibility properties of the q-tangent numbers. Proc. Am. Math. Soc. 68(3), 380–384 (1978)