| article html file updated | 8 February 2020 07:20 CET | Update | https://www.mdpi.com/1660-3397/15/6/159 |
| article html file updated | 25 September 2019 03:28 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:15 CEST | Update | N/A |
| article html file updated | 27 June 2017 11:33 CEST | Update | N/A |
| article html file updated | 2 June 2017 13:19 CEST | Original file | N/A |
| article xml uploaded. | 2 June 2017 13:18 CEST | Original file | https://www.mdpi.com/1660-3397/15/6/159/xml |
| article pdf uploaded. | 2 June 2017 13:18 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/6/159/pdf |
