| article html file updated | 30 August 2025 20:27 CEST | Update | https://www.mdpi.com/2076-0752/8/2/68 |
| article html file updated | 19 July 2022 19:20 CEST | Update | - |
| article html file updated | 12 February 2020 16:16 CET | Update | - |
| article html file updated | 4 July 2019 16:36 CEST | Update | - |
| article html file updated | 30 May 2019 04:48 CEST | Original file | - |
| article pdf uploaded. | 30 May 2019 04:46 CEST | Version of Record | https://www.mdpi.com/2076-0752/8/2/68/pdf |
| article xml uploaded. | 30 May 2019 04:46 CEST | Update | https://www.mdpi.com/2076-0752/8/2/68/xml |
| article xml file uploaded | 30 May 2019 04:46 CEST | Original file | - |
