| article html file updated | 30 August 2025 00:17 CEST | Update | https://www.mdpi.com/1996-1073/10/2/151 | 
| article html file updated | 16 July 2022 04:38 CEST | Update | - | 
| article html file updated | 7 February 2020 22:06 CET | Update | - | 
| article html file updated | 23 September 2019 00:52 CEST | Update | - | 
| article html file updated | 4 May 2019 13:50 CEST | Update | - | 
| article html file updated | 28 February 2017 10:22 CET | Update | - | 
| article html file updated | 24 January 2017 08:26 CET | Original file | - | 
| article xml uploaded. | 24 January 2017 08:25 CET | Update | https://www.mdpi.com/1996-1073/10/2/151/xml | 
| article xml uploaded. | 24 January 2017 08:25 CET | Original file | - | 
| article pdf uploaded. | 24 January 2017 08:25 CET | Version of Record | https://www.mdpi.com/1996-1073/10/2/151/pdf |