| article html file updated | 30 August 2025 03:18 CEST | Update | https://www.mdpi.com/2227-7390/6/4/49 |
| article html file updated | 21 August 2025 19:51 CEST | Update | N/A |
| article html file updated | 16 July 2022 10:25 CEST | Update | N/A |
| article html file updated | 9 February 2020 12:11 CET | Update | N/A |
| article html file updated | 2 October 2019 04:56 CEST | Update | N/A |
| article html file updated | 1 May 2019 06:47 CEST | Update | N/A |
| article html file updated | 17 April 2019 06:49 CEST | Update | N/A |
| article html file updated | 29 March 2019 11:56 CET | Update | N/A |
| article html file updated | 1 May 2018 05:20 CEST | Update | N/A |
| article html file updated | 3 April 2018 12:52 CEST | Update | N/A |
| article html file updated | 2 April 2018 23:34 CEST | Original file | N/A |
| article xml uploaded. | 2 April 2018 09:04 CEST | Original file | https://www.mdpi.com/2227-7390/6/4/49/xml |
| article pdf uploaded. | 2 April 2018 09:04 CEST | Version of Record | https://www.mdpi.com/2227-7390/6/4/49/pdf |
