| article html file updated | 8 February 2020 02:34 CET | Update | https://www.mdpi.com/1660-3397/15/4/101 |
| article html file updated | 24 September 2019 02:05 CEST | Update | - |
| article html file updated | 4 May 2019 04:19 CEST | Update | - |
| article html file updated | 28 April 2017 08:21 CEST | Update | - |
| article html file updated | 6 April 2017 12:34 CEST | Original file | - |
| article xml uploaded. | 6 April 2017 12:33 CEST | Original file | https://www.mdpi.com/1660-3397/15/4/101/xml |
| article pdf uploaded. | 6 April 2017 12:33 CEST | Updated version of record | https://www.mdpi.com/1660-3397/15/4/101/pdf |
| article pdf uploaded. | 30 March 2017 11:26 CEST | Version of Record | https://www.mdpi.com/1660-3397/15/4/101/pdf-vor |
