| article html file updated | 13 August 2026 20:20 CEST | Update | https://www.mdpi.com/2071-1050/7/5/5981 |
| article html file updated | 6 February 2020 18:34 CET | Update | N/A |
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| article html file updated | 1 June 2015 09:12 CEST | Original file | N/A |
| article xml file uploaded | 1 June 2015 09:12 CEST | Original file | https://www.mdpi.com/2071-1050/7/5/5981/xml |
| article pdf uploaded. | 18 May 2015 15:43 CEST | Updated version of record | https://www.mdpi.com/2071-1050/7/5/5981/pdf |
| article pdf uploaded. | 13 May 2015 14:15 CEST | Version of Record | https://www.mdpi.com/2071-1050/7/5/5981/pdf-vor |
