| article html file updated | 24 December 2025 14:18 CET | Update | https://www.mdpi.com/2076-393X/6/2/21 |
| article html file updated | 30 August 2025 03:21 CEST | Update | N/A |
| article html file updated | 21 August 2025 19:53 CEST | Update | N/A |
| article html file updated | 16 July 2022 10:30 CEST | Update | N/A |
| article html file updated | 9 February 2020 12:39 CET | Update | N/A |
| article html file updated | 2 October 2019 07:36 CEST | Update | N/A |
| article html file updated | 1 May 2019 05:50 CEST | Update | N/A |
| article html file updated | 17 April 2019 05:58 CEST | Update | N/A |
| article html file updated | 29 March 2019 13:00 CET | Update | N/A |
| article html file updated | 27 June 2018 13:29 CEST | Update | N/A |
| article html file updated | 10 April 2018 07:52 CEST | Update | N/A |
| article xml uploaded. | 10 April 2018 07:51 CEST | Update | https://www.mdpi.com/2076-393X/6/2/21/xml |
| article pdf uploaded. | 10 April 2018 07:51 CEST | Updated version of record | https://www.mdpi.com/2076-393X/6/2/21/pdf |
| article html file updated | 5 April 2018 10:43 CEST | Original file | N/A |
| article pdf uploaded. | 5 April 2018 10:42 CEST | Version of Record | https://www.mdpi.com/2076-393X/6/2/21/pdf-vor |
