| article html file updated | 29 August 2025 22:23 CEST | Update | https://www.mdpi.com/2075-4450/6/4/977 |
| article html file updated | 20 August 2025 22:06 CEST | Update | N/A |
| article html file updated | 7 February 2020 01:17 CET | Original file | N/A |
| article pdf uploaded. | 25 November 2015 04:23 CET | Updated version of record | https://www.mdpi.com/2075-4450/6/4/977/pdf |
| article xml uploaded. | 25 November 2015 04:23 CET | Update | https://www.mdpi.com/2075-4450/6/4/977/xml |
| article pdf uploaded. | 23 November 2015 14:09 CET | Version of Record | https://www.mdpi.com/2075-4450/6/4/977/pdf-vor |
| article xml uploaded. | 23 November 2015 14:09 CET | Original file | N/A |
