| article html file updated | 9 February 2020 05:28 CET | Update | https://www.mdpi.com/2218-273X/8/1/7 |
| article html file updated | 30 September 2019 12:24 CEST | Update | - |
| article html file updated | 1 May 2019 21:05 CEST | Update | - |
| article html file updated | 17 April 2019 20:01 CEST | Update | - |
| article html file updated | 28 March 2019 20:48 CET | Update | - |
| article html file updated | 27 March 2018 14:24 CEST | Update | - |
| article html file updated | 4 February 2018 03:09 CET | Original file | - |
| article xml uploaded. | 4 February 2018 03:08 CET | Update | https://www.mdpi.com/2218-273X/8/1/7/xml |
| article xml uploaded. | 4 February 2018 03:00 CET | Update | - |
| article xml uploaded. | 4 February 2018 02:57 CET | Original file | - |
| article pdf uploaded. | 4 February 2018 02:57 CET | Version of Record | https://www.mdpi.com/2218-273X/8/1/7/pdf |
