| article html file updated | 23 October 2025 06:37 CEST | Update | https://www.mdpi.com/2076-2615/9/2/50 | 
| article html file updated | 11 February 2020 14:22 CET | Update | - | 
| article html file updated | 14 October 2019 14:54 CEST | Update | - | 
| article html file updated | 26 April 2019 20:03 CEST | Update | - | 
| article html file updated | 12 April 2019 15:54 CEST | Update | - | 
| article html file updated | 3 April 2019 16:32 CEST | Update | - | 
| article html file updated | 1 March 2019 21:29 CET | Update | - | 
| article html file updated | 28 February 2019 16:44 CET | Update | - | 
| article html file updated | 19 February 2019 06:16 CET | Original file | - | 
| article pdf uploaded. | 18 February 2019 11:54 CET | Updated version of record | https://www.mdpi.com/2076-2615/9/2/50/pdf | 
| article xml uploaded. | 18 February 2019 11:54 CET | Update | https://www.mdpi.com/2076-2615/9/2/50/xml | 
| article xml file uploaded | 18 February 2019 11:54 CET | Update | - | 
| article pdf uploaded. | 7 February 2019 11:56 CET | Version of Record | https://www.mdpi.com/2076-2615/9/2/50/pdf-vor | 
| article xml file uploaded | 7 February 2019 11:56 CET | Original file | - |