| article html file updated | 21 July 2022 20:44 CEST | Update | https://www.mdpi.com/2297-8739/7/2/34 |
| article html file updated | 16 June 2020 05:30 CEST | Original file | N/A |
| article pdf uploaded. | 16 June 2020 05:28 CEST | Updated version of record | https://www.mdpi.com/2297-8739/7/2/34/pdf |
| article xml uploaded. | 16 June 2020 05:28 CEST | Update | https://www.mdpi.com/2297-8739/7/2/34/xml |
| article xml file uploaded | 16 June 2020 05:28 CEST | Original file | N/A |
| article pdf uploaded. | 12 June 2020 14:26 CEST | Version of Record | https://www.mdpi.com/2297-8739/7/2/34/pdf-vor |
