| article html file updated | 11 February 2020 01:27 CET | Update | https://www.mdpi.com/2227-9040/6/4/61 |
| article html file updated | 11 October 2019 12:45 CEST | Update | - |
| article html file updated | 27 April 2019 23:14 CEST | Update | - |
| article html file updated | 13 April 2019 19:07 CEST | Update | - |
| article html file updated | 2 April 2019 08:22 CEST | Update | - |
| article html file updated | 26 December 2018 09:29 CET | Update | - |
| article html file updated | 13 December 2018 11:21 CET | Original file | - |
| article pdf uploaded. | 13 December 2018 11:20 CET | Updated version of record | https://www.mdpi.com/2227-9040/6/4/61/pdf |
| article xml uploaded. | 13 December 2018 11:20 CET | Update | https://www.mdpi.com/2227-9040/6/4/61/xml |
| article xml file uploaded | 13 December 2018 11:20 CET | Update | - |
| article pdf uploaded. | 5 December 2018 17:15 CET | Updated version of record | - |
| article pdf uploaded. | 5 December 2018 17:08 CET | Version of Record | - |
| article xml file uploaded | 5 December 2018 17:08 CET | Original file | - |
