Debug Info for generation of "last modified"
publications_303 (2007-07-03 19:47:59) | publication2person_303_243 (2007-07-03 19:47:59) | persons_243 (2011-04-27 15:58:00) | persons_243 (2018-07-18 17:44:47) | publication2person_303_731 (2007-07-03 19:47:59) | persons_731 (2013-01-23 23:26:00) | persons_4 (2004-12-16 19:22:00) | persons_4 (2015-10-09 23:55:09) | persons_4 (2015-10-09 23:56:22) | persons_4 (2016-01-14 14:48:32) | persons_4 (2019-12-20 17:54:41) | persons_4 (2021-08-23 15:46:06)