| article html file updated | 8 February 2020 07:44 CET | Update | https://www.mdpi.com/2075-4701/7/6/212 |
| article html file updated | 25 September 2019 05:39 CEST | Update | - |
| article html file updated | 3 May 2019 18:28 CEST | Update | - |
| article html file updated | 28 June 2017 14:02 CEST | Update | - |
| article html file updated | 8 June 2017 10:40 CEST | Original file | - |
| article xml uploaded. | 8 June 2017 10:38 CEST | Original file | https://www.mdpi.com/2075-4701/7/6/212/xml |
| article pdf uploaded. | 8 June 2017 10:38 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/6/212/pdf |
