| article html file updated | 7 February 2020 21:50 CET | Update | https://www.mdpi.com/2073-431X/6/1/3 |
| article html file updated | 22 September 2019 23:27 CEST | Update | - |
| article html file updated | 4 May 2019 14:22 CEST | Update | - |
| article html file updated | 29 March 2017 10:28 CEST | Update | - |
| article html file updated | 20 January 2017 13:13 CET | Original file | - |
| article xml uploaded. | 20 January 2017 13:11 CET | Update | https://www.mdpi.com/2073-431X/6/1/3/xml |
| article xml uploaded. | 20 January 2017 13:11 CET | Original file | - |
| article pdf uploaded. | 20 January 2017 13:11 CET | Version of Record | https://www.mdpi.com/2073-431X/6/1/3/pdf |
