| article html file updated | 30 August 2025 00:25 CEST | Update | https://www.mdpi.com/2220-9964/6/2/49 |
| article html file updated | 16 July 2022 04:54 CEST | Update | N/A |
| article html file updated | 7 February 2020 23:37 CET | Update | N/A |
| article html file updated | 23 September 2019 09:10 CEST | Update | N/A |
| article html file updated | 4 May 2019 10:49 CEST | Update | N/A |
| article html file updated | 1 March 2017 03:50 CET | Update | N/A |
| article html file updated | 17 February 2017 09:28 CET | Original file | N/A |
| article xml uploaded. | 17 February 2017 09:27 CET | Original file | https://www.mdpi.com/2220-9964/6/2/49/xml |
| article pdf uploaded. | 17 February 2017 09:27 CET | Version of Record | https://www.mdpi.com/2220-9964/6/2/49/pdf |