| article html file updated | 24 December 2025 13:58 CET | Update | https://www.mdpi.com/1996-1944/9/6/435 |
| article html file updated | 29 August 2025 23:10 CEST | Update | N/A |
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| article xml uploaded. | 2 June 2016 11:28 CEST | Update | https://www.mdpi.com/1996-1944/9/6/435/xml |
| article pdf uploaded. | 2 June 2016 11:28 CEST | Updated version of record | https://www.mdpi.com/1996-1944/9/6/435/pdf |
| article html file updated | 1 June 2016 13:17 CEST | Original file | N/A |
| article pdf uploaded. | 1 June 2016 13:15 CEST | Version of Record | https://www.mdpi.com/1996-1944/9/6/435/pdf-vor |