| article html file updated | 7 February 2020 09:07 CET | Update | https://www.mdpi.com/2079-6412/6/2/21 |
| article html file updated | 5 May 2019 15:01 CEST | Update | N/A |
| article html file updated | 27 March 2019 05:26 CET | Update | N/A |
| article html file updated | 27 June 2016 12:33 CEST | Update | N/A |
| article html file updated | 23 May 2016 08:13 CEST | Original file | N/A |
| article xml uploaded. | 23 May 2016 08:12 CEST | Original file | https://www.mdpi.com/2079-6412/6/2/21/xml |
| article pdf uploaded. | 23 May 2016 08:12 CEST | Version of Record | https://www.mdpi.com/2079-6412/6/2/21/pdf |
