| article html file updated | 11 February 2020 05:47 CET | Update | https://www.mdpi.com/2076-0752/8/1/4 |
| article html file updated | 27 April 2019 13:24 CEST | Update | - |
| article html file updated | 13 April 2019 09:24 CEST | Update | - |
| article html file updated | 2 April 2019 20:01 CEST | Update | - |
| article html file updated | 2 April 2019 11:37 CEST | Update | - |
| article html file updated | 29 December 2018 08:10 CET | Original file | - |
| article pdf uploaded. | 29 December 2018 08:08 CET | Version of Record | https://www.mdpi.com/2076-0752/8/1/4/pdf |
| article xml uploaded. | 29 December 2018 08:08 CET | Update | https://www.mdpi.com/2076-0752/8/1/4/xml |
| article xml file uploaded | 29 December 2018 08:08 CET | Original file | - |
