| article html file updated | 8 February 2020 06:59 CET | Update | https://www.mdpi.com/1660-3397/15/6/154 |
| article html file updated | 25 September 2019 01:47 CEST | Update | - |
| article html file updated | 3 May 2019 19:54 CEST | Update | - |
| article html file updated | 27 June 2017 11:33 CEST | Update | - |
| article html file updated | 30 May 2017 09:24 CEST | Original file | - |
| article xml uploaded. | 30 May 2017 09:22 CEST | Original file | https://www.mdpi.com/1660-3397/15/6/154/xml |
| article pdf uploaded. | 30 May 2017 09:22 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/6/154/pdf |
