| article html file updated | 30 August 2025 12:25 CEST | Update | https://www.mdpi.com/2227-9091/7/1/26 | 
| article html file updated | 19 July 2022 15:38 CEST | Update | - | 
| article html file updated | 11 February 2020 18:38 CET | Update | - | 
| article html file updated | 15 October 2019 16:09 CEST | Update | - | 
| article html file updated | 26 April 2019 11:10 CEST | Update | - | 
| article html file updated | 12 April 2019 06:41 CEST | Update | - | 
| article html file updated | 4 April 2019 03:44 CEST | Update | - | 
| article html file updated | 2 April 2019 09:46 CEST | Update | - | 
| article html file updated | 28 February 2019 04:40 CET | Update | - | 
| article html file updated | 26 February 2019 11:23 CET | Original file | - | 
| article pdf uploaded. | 26 February 2019 11:21 CET | Version of Record | https://www.mdpi.com/2227-9091/7/1/26/pdf | 
| article xml uploaded. | 26 February 2019 11:21 CET | Update | https://www.mdpi.com/2227-9091/7/1/26/xml | 
| article xml file uploaded | 26 February 2019 11:21 CET | Original file | - |