| article html file updated | 31 August 2025 07:12 CEST | Update | https://www.mdpi.com/1996-1073/13/1/68 |
| article html file updated | 19 July 2022 21:05 CEST | Update | N/A |
| article html file updated | 14 February 2020 20:50 CET | Update | N/A |
| article html file updated | 16 January 2020 09:48 CET | Update | N/A |
| article html file updated | 26 December 2019 12:25 CET | Original file | N/A |
| article pdf uploaded. | 26 December 2019 12:23 CET | Updated version of record | https://www.mdpi.com/1996-1073/13/1/68/pdf |
| article xml uploaded. | 26 December 2019 12:23 CET | Update | https://www.mdpi.com/1996-1073/13/1/68/xml |
| article xml file uploaded | 26 December 2019 12:23 CET | Update | N/A |
| article pdf uploaded. | 21 December 2019 11:54 CET | Version of Record | https://www.mdpi.com/1996-1073/13/1/68/pdf-vor |
| article xml file uploaded | 21 December 2019 11:54 CET | Original file | N/A |
