1. Baštinec J., Diblík J., Růžičková M. Opuscula Mathematica, Vol. 26, No. 3 (2006), 395–406.
2. Diblík J., Funct. Differ. Equ., 11 (2004), 37–48.
3. Golda W., Werbowski J., Funkc. Ekvac. 37 (1994), 221–227.
4. Asymptotic Formulae for the Solutions of a Linear Delay Difference Equation−
5. Györi I., Pituk M., Dyn. Systems and Appl. 5 (1996), 277–302.