Figure 1
A schematic illustration of the calculation of journals’ m-reach. (a) The papers are represented by grey nodes, connected by directed citation links, while the journals are corresponding to the coloured sets; (b) When calculating the m-reach, the links have to be reverted. For example, in the case of a 3-reach, articles in journal B (orange) can reach four papers in total (the ones in journals A, C and D) excluding journal B itself, while journal H (dark blue) has a reach of six (given by articles in journals F and G). Note that if we would switch to network between journals, B would have a reach of five (as it can reach journals A, C, D, E and F), while journal H would have a reach of two (as it could reach only journals F and G).
