| article html file updated | 30 August 2025 10:51 CEST | Update | https://www.mdpi.com/2218-273X/9/1/21 |
| article html file updated | 17 July 2022 22:12 CEST | Update | N/A |
| article html file updated | 11 February 2020 08:04 CET | Update | N/A |
| article html file updated | 13 October 2019 04:21 CEST | Update | N/A |
| article html file updated | 27 April 2019 08:30 CEST | Update | N/A |
| article html file updated | 13 April 2019 04:32 CEST | Update | N/A |
| article html file updated | 3 April 2019 01:21 CEST | Update | N/A |
| article html file updated | 29 January 2019 07:46 CET | Update | N/A |
| article html file updated | 11 January 2019 11:30 CET | Update | N/A |
| article pdf uploaded. | 11 January 2019 11:28 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/21/pdf |
| article xml uploaded. | 11 January 2019 11:28 CET | Update | https://www.mdpi.com/2218-273X/9/1/21/xml |
| article xml file uploaded | 11 January 2019 11:28 CET | Update | N/A |
| article html file updated | 11 January 2019 10:56 CET | Original file | N/A |
| article pdf uploaded. | 11 January 2019 10:54 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/21/pdf-vor |
| article xml uploaded. | 11 January 2019 10:54 CET | Update | N/A |
| article xml file uploaded | 11 January 2019 10:54 CET | Update | N/A |
| article pdf uploaded. | 10 January 2019 15:29 CET | Updated version of record | https://www.mdpi.com/2218-273X/9/1/21/pdf-vor |
| article xml file uploaded | 10 January 2019 15:26 CET | Original file | N/A |
| article pdf uploaded. | 10 January 2019 15:26 CET | Version of Record | https://www.mdpi.com/2218-273X/9/1/21/pdf-vor |
