| article html file updated | 30 August 2025 01:48 CEST | Update | https://www.mdpi.com/2218-6581/6/4/35 |
| article html file updated | 16 July 2022 07:37 CEST | Update | - |
| article html file updated | 8 February 2020 22:17 CET | Update | - |
| article html file updated | 2 May 2019 12:35 CEST | Update | - |
| article html file updated | 18 April 2019 10:12 CEST | Update | - |
| article html file updated | 2 January 2018 10:46 CET | Update | - |
| article html file updated | 28 November 2017 13:36 CET | Original file | - |
| article xml uploaded. | 28 November 2017 13:34 CET | Update | https://www.mdpi.com/2218-6581/6/4/35/xml |
| article xml uploaded. | 28 November 2017 13:34 CET | Original file | - |
| article pdf uploaded. | 28 November 2017 13:34 CET | Updated version of record | https://www.mdpi.com/2218-6581/6/4/35/pdf |
| article pdf uploaded. | 26 November 2017 07:51 CET | Version of Record | https://www.mdpi.com/2218-6581/6/4/35/pdf-vor |