| article html file updated | 30 August 2025 03:12 CEST | Update | https://www.mdpi.com/2304-8158/7/4/47 |
| article html file updated | 21 August 2025 19:48 CEST | Update | N/A |
| article html file updated | 9 February 2020 11:22 CET | Update | N/A |
| article html file updated | 2 October 2019 00:01 CEST | Update | N/A |
| article html file updated | 1 May 2019 08:30 CEST | Update | N/A |
| article html file updated | 17 April 2019 08:25 CEST | Update | N/A |
| article html file updated | 29 March 2019 10:03 CET | Update | N/A |
| article html file updated | 1 May 2018 05:25 CEST | Update | N/A |
| article html file updated | 26 March 2018 17:44 CEST | Original file | N/A |
| article xml uploaded. | 26 March 2018 17:43 CEST | Original file | https://www.mdpi.com/2304-8158/7/4/47/xml |
| article pdf uploaded. | 26 March 2018 17:43 CEST | Version of Record | https://www.mdpi.com/2304-8158/7/4/47/pdf |