| article html file updated | 7 February 2020 20:47 CET | Update | https://www.mdpi.com/2073-4352/7/1/12 |
| article html file updated | 22 September 2019 17:51 CEST | Update | N/A |
| article html file updated | 4 May 2019 16:48 CEST | Update | N/A |
| article html file updated | 7 February 2017 04:09 CET | Update | N/A |
| article html file updated | 4 January 2017 11:13 CET | Original file | N/A |
| article xml uploaded. | 4 January 2017 11:12 CET | Original file | https://www.mdpi.com/2073-4352/7/1/12/xml |
| article pdf uploaded. | 4 January 2017 11:12 CET | Version of Record | https://www.mdpi.com/2073-4352/7/1/12/pdf |
