| article html file updated | 8 February 2020 06:23 CET | Update | https://www.mdpi.com/2218-2004/5/2/21 |
| article html file updated | 3 May 2019 21:01 CEST | Update | - |
| article html file updated | 28 June 2017 12:32 CEST | Update | - |
| article html file updated | 22 May 2017 05:10 CEST | Update | - |
| article html file updated | 20 May 2017 14:59 CEST | Original file | - |
| article xml uploaded. | 20 May 2017 14:58 CEST | Original file | https://www.mdpi.com/2218-2004/5/2/21/xml |
| article pdf uploaded. | 20 May 2017 14:58 CEST | Version of Record | https://www.mdpi.com/2218-2004/5/2/21/pdf |
