| article html file updated | 8 February 2020 06:07 CET | Update | https://www.mdpi.com/1660-3397/15/5/140 |
| article html file updated | 24 September 2019 21:14 CEST | Update | - |
| article html file updated | 3 May 2019 21:33 CEST | Update | - |
| article html file updated | 1 June 2017 04:20 CEST | Update | - |
| article html file updated | 22 May 2017 04:30 CEST | Update | - |
| article html file updated | 18 May 2017 09:43 CEST | Original file | - |
| article xml uploaded. | 18 May 2017 09:42 CEST | Original file | https://www.mdpi.com/1660-3397/15/5/140/xml |
| article pdf uploaded. | 18 May 2017 09:42 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/5/140/pdf |
