| article html file updated | 7 February 2020 08:44 CET | Update | https://www.mdpi.com/2079-8954/4/2/21 |
| article html file updated | 5 May 2019 15:44 CEST | Update | N/A |
| article html file updated | 27 March 2019 04:45 CET | Update | N/A |
| article html file updated | 4 July 2016 11:07 CEST | Update | N/A |
| article html file updated | 16 May 2016 11:12 CEST | Update | N/A |
| article xml uploaded. | 16 May 2016 11:11 CEST | Update | https://www.mdpi.com/2079-8954/4/2/21/xml |
| article pdf uploaded. | 16 May 2016 11:11 CEST | Updated version of record | https://www.mdpi.com/2079-8954/4/2/21/pdf |
| article html file updated | 16 May 2016 10:59 CEST | Original file | N/A |
