Fig. 6.

Interdisciplinary nature of top SBs. Cumulative distribution functions of fraction of external citations for the group of (red) top 1,000 SBs ($B\ge 317.93$); (blue) from the 1,001st to the top 1% ($33.21\le B<317.93$); and (black) the rest ($B<33.21$). The horizontal axis measures for each paper the fraction of its citations that originate from other subject categories.