In Sonar version 3.6.x the Plugin "SCM Activity http://docs.codehaus.org/display/SONAR/SCM+Activity+Plugin" provided a metric "authors_by_line". So it was possible to get resources with authors e.g. .../api/resources?resource=foo&metrics=authors_by_line.
But in SonarQube version 4.0 and 4.1 it seems not possible to get these information. Is there a known bug or is this metric deprecated?