| article html file updated | 30 August 2025 00:32 CEST | Update | https://www.mdpi.com/2076-3921/6/1/18 |
| article html file updated | 16 July 2022 05:07 CEST | Update | N/A |
| article html file updated | 8 February 2020 00:38 CET | Update | N/A |
| article html file updated | 23 September 2019 14:59 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:34 CEST | Update | N/A |
| article html file updated | 29 March 2017 08:17 CEST | Update | N/A |
| article html file updated | 2 March 2017 14:06 CET | Original file | N/A |
| article xml uploaded. | 2 March 2017 14:05 CET | Original file | https://www.mdpi.com/2076-3921/6/1/18/xml |
| article pdf uploaded. | 2 March 2017 14:05 CET | Version of Record | https://www.mdpi.com/2076-3921/6/1/18/pdf |
