| article html file updated | 12 February 2020 02:17 CET | Update | https://www.mdpi.com/2218-273X/9/4/131 |
| article html file updated | 8 May 2019 21:50 CEST | Update | N/A |
| article html file updated | 25 April 2019 18:21 CEST | Update | N/A |
| article html file updated | 17 April 2019 12:19 CEST | Original file | N/A |
| article pdf uploaded. | 17 April 2019 12:18 CEST | Updated version of record | https://www.mdpi.com/2218-273X/9/4/131/pdf |
| article xml uploaded. | 17 April 2019 12:18 CEST | Update | https://www.mdpi.com/2218-273X/9/4/131/xml |
| article xml file uploaded | 17 April 2019 12:18 CEST | Update | N/A |
| article pdf uploaded. | 1 April 2019 16:48 CEST | Version of Record | https://www.mdpi.com/2218-273X/9/4/131/pdf-vor |
| article xml file uploaded | 1 April 2019 16:48 CEST | Original file | N/A |
