| article html file updated | 31 August 2025 03:23 CEST | Update | https://www.mdpi.com/2218-6581/8/4/91 |
| article html file updated | 20 July 2022 01:03 CEST | Update | N/A |
| article html file updated | 14 February 2020 03:21 CET | Update | N/A |
| article html file updated | 31 December 2019 00:43 CET | Update | N/A |
| article html file updated | 30 October 2019 03:31 CET | Original file | N/A |
| article pdf uploaded. | 30 October 2019 03:29 CET | Updated version of record | https://www.mdpi.com/2218-6581/8/4/91/pdf |
| article xml uploaded. | 30 October 2019 03:29 CET | Update | https://www.mdpi.com/2218-6581/8/4/91/xml |
| article xml file uploaded | 30 October 2019 03:29 CET | Update | N/A |
| article pdf uploaded. | 23 October 2019 16:53 CEST | Version of Record | https://www.mdpi.com/2218-6581/8/4/91/pdf-vor |
| article xml file uploaded | 23 October 2019 16:53 CEST | Original file | N/A |
