| article html file updated | 8 February 2020 05:47 CET | Update | https://www.mdpi.com/1660-3397/15/5/138 |
| article html file updated | 24 September 2019 19:32 CEST | Update | - |
| article html file updated | 3 May 2019 22:12 CEST | Update | - |
| article html file updated | 1 June 2017 04:20 CEST | Update | - |
| article html file updated | 23 May 2017 04:11 CEST | Update | - |
| article html file updated | 17 May 2017 13:32 CEST | Original file | - |
| article xml uploaded. | 17 May 2017 13:30 CEST | Update | https://www.mdpi.com/1660-3397/15/5/138/xml |
| article pdf uploaded. | 17 May 2017 13:30 CEST | Updated version of record | https://www.mdpi.com/1660-3397/15/5/138/pdf |
| article pdf uploaded. | 13 May 2017 10:09 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/5/138/pdf-vor |
