| article html file updated | 30 August 2025 08:54 CEST | Update | https://www.mdpi.com/2227-7099/6/4/60 |
| article html file updated | 17 July 2022 09:35 CEST | Update | N/A |
| article html file updated | 10 February 2020 21:47 CET | Update | N/A |
| article html file updated | 10 October 2019 14:13 CEST | Update | N/A |
| article html file updated | 28 April 2019 07:07 CEST | Update | N/A |
| article html file updated | 14 April 2019 02:58 CEST | Update | N/A |
| article html file updated | 1 April 2019 22:16 CEST | Update | N/A |
| article html file updated | 26 December 2018 05:46 CET | Update | N/A |
| article html file updated | 16 November 2018 12:16 CET | Original file | N/A |
| article pdf uploaded. | 16 November 2018 12:14 CET | Version of Record | https://www.mdpi.com/2227-7099/6/4/60/pdf |
| article xml uploaded. | 16 November 2018 12:14 CET | Update | https://www.mdpi.com/2227-7099/6/4/60/xml |
| article xml file uploaded | 16 November 2018 12:14 CET | Original file | N/A |