| article html file updated | 16 August 2026 14:26 CEST | Update | https://www.mdpi.com/2227-7102/9/4/249 |
| article html file updated | 13 February 2020 20:22 CET | Update | N/A |
| article html file updated | 26 September 2019 06:33 CEST | Original file | N/A |
| article pdf uploaded. | 26 September 2019 05:49 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/4/249/pdf |
| article xml uploaded. | 26 September 2019 05:49 CEST | Update | https://www.mdpi.com/2227-7102/9/4/249/xml |
| article xml file uploaded | 26 September 2019 05:49 CEST | Original file | N/A |
