| article html file updated | 30 August 2025 06:29 CEST | Update | https://www.mdpi.com/2304-8158/7/9/136 |
| article html file updated | 17 July 2022 01:48 CEST | Update | - |
| article html file updated | 10 February 2020 08:15 CET | Update | - |
| article html file updated | 7 October 2019 05:31 CEST | Update | - |
| article html file updated | 29 April 2019 11:24 CEST | Update | - |
| article html file updated | 15 April 2019 07:02 CEST | Update | - |
| article html file updated | 31 March 2019 13:11 CEST | Update | - |
| article html file updated | 26 September 2018 10:37 CEST | Update | - |
| article html file updated | 30 August 2018 10:14 CEST | Original file | - |
| article pdf uploaded. | 30 August 2018 10:13 CEST | Version of Record | https://www.mdpi.com/2304-8158/7/9/136/pdf |
| article xml uploaded. | 30 August 2018 10:13 CEST | Update | https://www.mdpi.com/2304-8158/7/9/136/xml |
| article xml file uploaded | 30 August 2018 10:13 CEST | Original file | - |