| article html file updated | 7 February 2020 07:45 CET | Update | https://www.mdpi.com/2073-4395/6/2/28 |
| article html file updated | 5 May 2019 17:39 CEST | Update | - |
| article html file updated | 27 March 2019 02:53 CET | Update | - |
| article html file updated | 30 June 2016 07:40 CEST | Update | - |
| article html file updated | 25 April 2016 12:02 CEST | Update | - |
| article xml uploaded. | 25 April 2016 12:01 CEST | Update | https://www.mdpi.com/2073-4395/6/2/28/xml |
| article pdf uploaded. | 25 April 2016 12:01 CEST | Updated version of record | https://www.mdpi.com/2073-4395/6/2/28/pdf |
| article html file updated | 25 April 2016 11:47 CEST | Original file | - |
