| article html file updated | 8 February 2020 00:48 CET | Update | https://www.mdpi.com/2077-0375/7/1/13 |
| article html file updated | 23 September 2019 16:06 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:09 CEST | Update | N/A |
| article html file updated | 30 March 2017 10:59 CEST | Update | N/A |
| article html file updated | 5 March 2017 09:17 CET | Original file | N/A |
| article xml uploaded. | 5 March 2017 09:16 CET | Original file | https://www.mdpi.com/2077-0375/7/1/13/xml |
| article pdf uploaded. | 5 March 2017 09:16 CET | Version of Record | https://www.mdpi.com/2077-0375/7/1/13/pdf |
