| article html file updated | 30 August 2025 00:24 CEST | Update | https://www.mdpi.com/2072-6643/9/2/138 |
| article html file updated | 16 July 2022 04:51 CEST | Update | - |
| article html file updated | 7 February 2020 23:20 CET | Update | - |
| article html file updated | 23 September 2019 07:39 CEST | Update | - |
| article html file updated | 4 May 2019 11:22 CEST | Update | - |
| article html file updated | 2 March 2017 03:51 CET | Update | - |
| article html file updated | 14 February 2017 10:08 CET | Original file | - |
| article xml uploaded. | 14 February 2017 10:07 CET | Original file | https://www.mdpi.com/2072-6643/9/2/138/xml |
| article pdf uploaded. | 14 February 2017 10:07 CET | Version of Record | https://www.mdpi.com/2072-6643/9/2/138/pdf |