| article html file updated | 9 February 2020 04:02 CET | Update | https://www.mdpi.com/1996-1073/11/2/264 |
| article html file updated | 30 September 2019 03:43 CEST | Update | N/A |
| article html file updated | 2 May 2019 00:10 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:40 CEST | Update | N/A |
| article html file updated | 28 March 2019 17:44 CET | Update | N/A |
| article html file updated | 14 March 2018 15:16 CET | Update | N/A |
| article html file updated | 23 January 2018 17:26 CET | Original file | N/A |
| article xml uploaded. | 23 January 2018 17:25 CET | Original file | https://www.mdpi.com/1996-1073/11/2/264/xml |
| article pdf uploaded. | 23 January 2018 17:25 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/264/pdf |
