| article html file updated | 30 August 2025 11:31 CEST | Update | https://www.mdpi.com/2075-4701/9/2/139 | 
| article html file updated | 20 July 2022 17:07 CEST | Update | - | 
| article html file updated | 11 February 2020 11:49 CET | Update | - | 
| article html file updated | 14 October 2019 00:17 CEST | Update | - | 
| article html file updated | 27 April 2019 00:53 CEST | Update | - | 
| article html file updated | 12 April 2019 20:49 CEST | Update | - | 
| article html file updated | 3 April 2019 10:18 CEST | Update | - | 
| article html file updated | 28 January 2019 02:41 CET | Original file | - | 
| article pdf uploaded. | 27 January 2019 09:42 CET | Version of Record | https://www.mdpi.com/2075-4701/9/2/139/pdf | 
| article xml uploaded. | 27 January 2019 09:42 CET | Update | https://www.mdpi.com/2075-4701/9/2/139/xml | 
| article xml file uploaded | 27 January 2019 09:42 CET | Original file | - |