... Austrian Science Fund Project P17253 and supported byGrant no. A100190703 of the Grant Agency of the Academy of Science of the Czech Republic and by the Council of Czech Government MSM 6198959214.References1 ... are proved by acombination of the method of lower and upper functions with regularization and sequentialtechniques. Therefore, the notion of a sequential solution of problem 1.4a-1.4b wasintroduced. ... 1,α>0,β>0,3.17instead of solving 3.16. In Figures 14 and 15, we report on the numerical test runs for α 1,β 1, and two values of t1, t1 0.2andt1 0.8, respectively. In Figures 16 and 17, analogousresults...