| article html file updated | 1 September 2025 14:34 CEST | Update | https://www.mdpi.com/2227-7072/8/4/75 | 
| article html file updated | 23 July 2022 02:48 CEST | Update | - | 
| article html file updated | 28 November 2020 02:38 CET | Update | - | 
| article pdf uploaded. | 28 November 2020 02:37 CET | Updated version of record | https://www.mdpi.com/2227-7072/8/4/75/pdf | 
| article xml uploaded. | 28 November 2020 02:37 CET | Update | https://www.mdpi.com/2227-7072/8/4/75/xml | 
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| article html file updated | 27 November 2020 09:23 CET | Original file | - | 
| article pdf uploaded. | 27 November 2020 09:16 CET | Version of Record | https://www.mdpi.com/2227-7072/8/4/75/pdf-vor | 
| article xml uploaded. | 27 November 2020 09:16 CET | Update | - | 
| article xml file uploaded | 27 November 2020 09:16 CET | Original file | - |