| article html file updated | 31 August 2025 03:54 CEST | Update | https://www.mdpi.com/2218-1989/9/11/260 | 
| article html file updated | 21 August 2025 23:10 CEST | Update | - | 
| article html file updated | 20 July 2022 00:27 CEST | Update | - | 
| article html file updated | 14 February 2020 06:01 CET | Update | - | 
| article html file updated | 28 November 2019 00:23 CET | Update | - | 
| article html file updated | 18 November 2019 07:08 CET | Original file | - | 
| article pdf uploaded. | 18 November 2019 07:06 CET | Updated version of record | https://www.mdpi.com/2218-1989/9/11/260/pdf | 
| article xml uploaded. | 18 November 2019 07:06 CET | Update | https://www.mdpi.com/2218-1989/9/11/260/xml | 
| article xml file uploaded | 18 November 2019 07:06 CET | Update | - | 
| article pdf uploaded. | 1 November 2019 12:37 CET | Version of Record | https://www.mdpi.com/2218-1989/9/11/260/pdf-vor | 
| article xml file uploaded | 1 November 2019 12:37 CET | Original file | - |