In 2015 we published issues 41 - 44. Totally we published 74 papers, i.e. in issue no. 41 - 12 papers, no. 42 - 18 papers, no. 43 - 15 papers and in no. 44 - 29 papers. The number of the authors in each issue (excluding authors repeated in a given issue) was 166, inc. 85 from countries other than Poland. Below you can see the number of papers in given sections and the total number of authors divided into the country of affiliation.