| article html file updated | 30 August 2025 03:21 CEST | Update | https://www.mdpi.com/2075-4701/8/4/241 | 
| article html file updated | 21 August 2025 19:53 CEST | Update | - | 
| article html file updated | 9 February 2020 12:40 CET | Update | - | 
| article html file updated | 2 October 2019 07:42 CEST | Update | - | 
| article html file updated | 1 May 2019 05:48 CEST | Update | - | 
| article html file updated | 17 April 2019 05:56 CEST | Update | - | 
| article html file updated | 29 March 2019 13:02 CET | Update | - | 
| article html file updated | 1 May 2018 07:42 CEST | Update | - | 
| article html file updated | 1 May 2018 07:41 CEST | Update | - | 
| article html file updated | 5 April 2018 16:19 CEST | Original file | - | 
| article xml uploaded. | 5 April 2018 16:18 CEST | Update | https://www.mdpi.com/2075-4701/8/4/241/xml | 
| article pdf uploaded. | 5 April 2018 16:18 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/241/pdf |