| article html file updated | 8 February 2020 07:53 CET | Update | https://www.mdpi.com/1660-3397/15/6/170 |
| article html file updated | 25 September 2019 06:22 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:11 CEST | Update | N/A |
| article html file updated | 27 June 2017 11:29 CEST | Update | N/A |
| article html file updated | 12 June 2017 08:48 CEST | Original file | N/A |
| article xml uploaded. | 12 June 2017 08:46 CEST | Original file | https://www.mdpi.com/1660-3397/15/6/170/xml |
| article pdf uploaded. | 12 June 2017 08:46 CEST | Updated version of record | https://www.mdpi.com/1660-3397/15/6/170/pdf |
| article pdf uploaded. | 9 June 2017 14:36 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/6/170/pdf-vor |
