| article html file updated | 9 February 2020 04:04 CET | Update | https://www.mdpi.com/1996-1073/11/2/272 |
| article html file updated | 30 September 2019 03:54 CEST | Update | - |
| article html file updated | 2 May 2019 00:06 CEST | Update | - |
| article html file updated | 17 April 2019 22:37 CEST | Update | - |
| article html file updated | 28 March 2019 17:48 CET | Update | - |
| article html file updated | 14 March 2018 15:20 CET | Update | - |
| article html file updated | 23 January 2018 15:42 CET | Original file | - |
| article xml uploaded. | 23 January 2018 15:41 CET | Update | https://www.mdpi.com/1996-1073/11/2/272/xml |
| article xml uploaded. | 23 January 2018 15:41 CET | Update | - |
| article xml uploaded. | 23 January 2018 15:41 CET | Update | - |
| article xml uploaded. | 23 January 2018 15:41 CET | Original file | - |
| article pdf uploaded. | 23 January 2018 15:40 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/272/pdf |
