| article html file updated | 8 February 2020 06:10 CET | Update | https://www.mdpi.com/2075-4450/8/2/52 |
| article html file updated | 24 September 2019 21:34 CEST | Update | - |
| article html file updated | 3 May 2019 21:26 CEST | Update | - |
| article html file updated | 30 June 2017 05:40 CEST | Update | - |
| article html file updated | 22 May 2017 04:41 CEST | Update | - |
| article html file updated | 18 May 2017 14:36 CEST | Original file | - |
| article xml uploaded. | 18 May 2017 14:35 CEST | Update | https://www.mdpi.com/2075-4450/8/2/52/xml |
| article pdf uploaded. | 18 May 2017 14:35 CEST | Version of Record | https://www.mdpi.com/2075-4450/8/2/52/pdf |
