| article html file updated | 30 August 2025 11:37 CEST | Update | https://www.mdpi.com/2079-9268/9/1/6 | 
| article html file updated | 18 July 2022 02:29 CEST | Update | - | 
| article html file updated | 11 February 2020 12:22 CET | Update | - | 
| article html file updated | 14 October 2019 03:19 CEST | Update | - | 
| article html file updated | 26 April 2019 23:48 CEST | Update | - | 
| article html file updated | 12 April 2019 19:42 CEST | Update | - | 
| article html file updated | 3 April 2019 11:43 CEST | Update | - | 
| article html file updated | 31 January 2019 17:10 CET | Original file | - | 
| article pdf uploaded. | 31 January 2019 17:08 CET | Updated version of record | https://www.mdpi.com/2079-9268/9/1/6/pdf | 
| article xml uploaded. | 31 January 2019 17:08 CET | Update | https://www.mdpi.com/2079-9268/9/1/6/xml | 
| article xml file uploaded | 31 January 2019 17:08 CET | Update | - | 
| article pdf uploaded. | 29 January 2019 13:49 CET | Version of Record | https://www.mdpi.com/2079-9268/9/1/6/pdf-vor | 
| article xml file uploaded | 29 January 2019 13:49 CET | Original file | - |