| article html file updated | 7 February 2020 21:38 CET | Update | https://www.mdpi.com/2075-471X/6/1/2 |
| article html file updated | 22 September 2019 22:21 CEST | Update | N/A |
| article html file updated | 4 May 2019 14:49 CEST | Update | N/A |
| article html file updated | 17 January 2017 11:38 CET | Update | N/A |
| article html file updated | 17 January 2017 11:38 CET | Original file | N/A |
| article xml uploaded. | 17 January 2017 11:37 CET | Original file | https://www.mdpi.com/2075-471X/6/1/2/xml |
| article pdf uploaded. | 17 January 2017 11:37 CET | Version of Record | https://www.mdpi.com/2075-471X/6/1/2/pdf |
