| article html file updated | 30 August 2025 04:20 CEST | Update | https://www.mdpi.com/2075-1729/8/2/21 |
| article html file updated | 16 July 2022 21:12 CEST | Update | N/A |
| article html file updated | 9 February 2020 20:30 CET | Update | N/A |
| article html file updated | 30 April 2019 13:17 CEST | Update | N/A |
| article html file updated | 16 April 2019 13:55 CEST | Update | N/A |
| article html file updated | 16 April 2019 08:17 CEST | Update | N/A |
| article html file updated | 30 March 2019 08:12 CET | Update | N/A |
| article html file updated | 26 June 2018 13:13 CEST | Update | N/A |
| article html file updated | 6 June 2018 12:30 CEST | Original file | N/A |
| article pdf uploaded. | 6 June 2018 12:28 CEST | Version of Record | https://www.mdpi.com/2075-1729/8/2/21/pdf |
| article xml uploaded. | 6 June 2018 12:28 CEST | Update | https://www.mdpi.com/2075-1729/8/2/21/xml |
| article xml file uploaded | 6 June 2018 12:28 CEST | Original file | N/A |
