| article html file updated | 7 February 2020 09:37 CET | Update | https://www.mdpi.com/1999-5903/8/2/24 |
| article html file updated | 5 May 2019 14:00 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:23 CET | Update | N/A |
| article html file updated | 1 June 2016 13:48 CEST | Original file | N/A |
| article xml uploaded. | 1 June 2016 13:47 CEST | Original file | https://www.mdpi.com/1999-5903/8/2/24/xml |
| article pdf uploaded. | 1 June 2016 13:47 CEST | Version of Record | https://www.mdpi.com/1999-5903/8/2/24/pdf |
