Refereeing is an essential activity in the publication process. It must be noted that, unfortunately, this activity is performed "pro bono" by willing researchers. It is my intention to continue to give my contribution to the development of mathematical research, but at the same time I do not wish to help greedy publishing houses increase their incredibly huge profits. Therefore, I am not going to accept to referee:
papers submitted to journals published by Elsevier
papers submitted to journals of doubtful reputation, charging excessive publication fees, or adopting other kinds of predatory practice
any paper, if the editor requires a report within less than 60 days