| article html file updated | 11 February 2020 01:14 CET | Update | https://www.mdpi.com/2079-9721/6/4/108 |
| article html file updated | 27 April 2019 23:42 CEST | Update | - |
| article html file updated | 13 April 2019 19:36 CEST | Update | - |
| article html file updated | 2 April 2019 07:44 CEST | Update | - |
| article html file updated | 26 December 2018 22:01 CET | Update | - |
| article html file updated | 5 December 2018 06:30 CET | Original file | - |
| article pdf uploaded. | 5 December 2018 06:29 CET | Version of Record | https://www.mdpi.com/2079-9721/6/4/108/pdf |
| article xml uploaded. | 5 December 2018 06:29 CET | Update | https://www.mdpi.com/2079-9721/6/4/108/xml |
| article xml file uploaded | 5 December 2018 06:29 CET | Original file | - |
