| article html file updated | 15 August 2026 00:02 CEST | Update | https://www.mdpi.com/2304-8158/7/4/50 |
| article html file updated | 24 December 2025 14:17 CET | Update | N/A |
| article html file updated | 30 August 2025 03:17 CEST | Update | N/A |
| article html file updated | 21 August 2025 19:51 CEST | Update | N/A |
| article html file updated | 16 July 2022 10:24 CEST | Update | N/A |
| article html file updated | 9 February 2020 12:07 CET | Update | N/A |
| article html file updated | 2 October 2019 04:33 CEST | Update | N/A |
| article html file updated | 1 May 2019 06:55 CEST | Update | N/A |
| article html file updated | 17 April 2019 06:57 CEST | Update | N/A |
| article html file updated | 29 March 2019 11:47 CET | Update | N/A |
| article html file updated | 1 May 2018 05:25 CEST | Update | N/A |
| article html file updated | 3 April 2018 12:21 CEST | Update | N/A |
| article html file updated | 1 April 2018 22:59 CEST | Original file | N/A |
| article xml uploaded. | 1 April 2018 10:58 CEST | Original file | https://www.mdpi.com/2304-8158/7/4/50/xml |
| article pdf uploaded. | 1 April 2018 10:58 CEST | Version of Record | https://www.mdpi.com/2304-8158/7/4/50/pdf |
