| article html file updated | 30 August 2025 00:14 CEST | Update | https://www.mdpi.com/2304-8158/6/1/8 |
| article html file updated | 16 July 2022 04:31 CEST | Update | - |
| article html file updated | 7 February 2020 21:32 CET | Update | - |
| article html file updated | 22 September 2019 21:48 CEST | Update | - |
| article html file updated | 4 May 2019 15:08 CEST | Update | - |
| article html file updated | 8 February 2017 12:26 CET | Update | - |
| article html file updated | 15 January 2017 09:40 CET | Original file | - |
| article xml uploaded. | 15 January 2017 09:39 CET | Original file | https://www.mdpi.com/2304-8158/6/1/8/xml |
| article pdf uploaded. | 15 January 2017 09:39 CET | Version of Record | https://www.mdpi.com/2304-8158/6/1/8/pdf |