| article html file updated | 30 August 2025 06:43 CEST | Update | https://www.mdpi.com/2075-163X/8/9/391 | 
| article html file updated | 17 July 2022 02:17 CEST | Update | - | 
| article html file updated | 10 February 2020 09:38 CET | Update | - | 
| article html file updated | 7 October 2019 13:33 CEST | Update | - | 
| article html file updated | 29 April 2019 08:20 CEST | Update | - | 
| article html file updated | 15 April 2019 04:05 CEST | Update | - | 
| article html file updated | 31 March 2019 16:06 CEST | Update | - | 
| article html file updated | 25 September 2018 05:16 CEST | Update | - | 
| article html file updated | 23 September 2018 05:16 CEST | Update | - | 
| article html file updated | 6 September 2018 15:34 CEST | Original file | - | 
| article pdf uploaded. | 6 September 2018 15:32 CEST | Version of Record | https://www.mdpi.com/2075-163X/8/9/391/pdf | 
| article xml uploaded. | 6 September 2018 15:32 CEST | Update | https://www.mdpi.com/2075-163X/8/9/391/xml | 
| article xml file uploaded | 6 September 2018 15:32 CEST | Original file | - |