| article html file updated | 30 August 2025 01:48 CEST | Update | https://www.mdpi.com/2073-4441/9/12/921 |
| article html file updated | 16 July 2022 07:37 CEST | Update | N/A |
| article html file updated | 8 February 2020 22:19 CET | Update | N/A |
| article html file updated | 28 September 2019 18:46 CEST | Update | N/A |
| article html file updated | 2 May 2019 12:29 CEST | Update | N/A |
| article html file updated | 18 April 2019 10:06 CEST | Update | N/A |
| article html file updated | 2 January 2018 16:44 CET | Update | N/A |
| article html file updated | 27 November 2017 09:49 CET | Original file | N/A |
| article xml uploaded. | 27 November 2017 09:47 CET | Update | https://www.mdpi.com/2073-4441/9/12/921/xml |
| article xml uploaded. | 27 November 2017 09:47 CET | Original file | N/A |
| article pdf uploaded. | 27 November 2017 09:47 CET | Version of Record | https://www.mdpi.com/2073-4441/9/12/921/pdf |
