| article html file updated | 11 February 2020 04:31 CET | Update | https://www.mdpi.com/2076-0752/8/1/2 |
| article html file updated | 27 April 2019 16:22 CEST | Update | - |
| article html file updated | 13 April 2019 12:14 CEST | Update | - |
| article html file updated | 2 April 2019 16:47 CEST | Update | - |
| article html file updated | 2 April 2019 11:36 CEST | Update | - |
| article html file updated | 21 December 2018 07:50 CET | Original file | - |
| article pdf uploaded. | 21 December 2018 07:49 CET | Version of Record | https://www.mdpi.com/2076-0752/8/1/2/pdf |
| article xml uploaded. | 21 December 2018 07:49 CET | Update | https://www.mdpi.com/2076-0752/8/1/2/xml |
| article xml file uploaded | 21 December 2018 07:49 CET | Original file | - |
