| article html file updated | 8 February 2020 05:46 CET | Update | https://www.mdpi.com/1660-3397/15/5/137 |
| article html file updated | 24 September 2019 19:28 CEST | Update | - |
| article html file updated | 3 May 2019 22:13 CEST | Update | - |
| article html file updated | 1 June 2017 04:20 CEST | Update | - |
| article html file updated | 23 May 2017 04:10 CEST | Update | - |
| article html file updated | 12 May 2017 14:53 CEST | Original file | - |
| article xml uploaded. | 12 May 2017 14:51 CEST | Original file | https://www.mdpi.com/1660-3397/15/5/137/xml |
| article pdf uploaded. | 12 May 2017 14:51 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/5/137/pdf |
