| article html file updated | 9 February 2020 03:38 CET | Update | https://www.mdpi.com/2075-4701/8/1/69 |
| article html file updated | 2 May 2019 01:04 CEST | Update | - |
| article html file updated | 17 April 2019 23:26 CEST | Update | - |
| article html file updated | 28 March 2019 16:51 CET | Update | - |
| article html file updated | 9 February 2018 11:07 CET | Update | - |
| article html file updated | 1 February 2018 12:37 CET | Update | - |
| article html file updated | 19 January 2018 15:11 CET | Original file | - |
| article xml uploaded. | 19 January 2018 15:09 CET | Update | https://www.mdpi.com/2075-4701/8/1/69/xml |
| article xml uploaded. | 19 January 2018 15:09 CET | Original file | - |
| article pdf uploaded. | 19 January 2018 15:09 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/69/pdf |
