| article html file updated | 7 February 2020 09:27 CET | Update | https://www.mdpi.com/2071-1050/8/6/520 |
| article html file updated | 5 May 2019 14:21 CEST | Update | - |
| article html file updated | 27 March 2019 06:04 CET | Update | - |
| article html file updated | 29 June 2016 05:24 CEST | Update | - |
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| article html file updated | 28 May 2016 23:24 CEST | Update | - |
| article html file updated | 28 May 2016 11:05 CEST | Original file | - |
| article xml uploaded. | 28 May 2016 11:04 CEST | Original file | https://www.mdpi.com/2071-1050/8/6/520/xml |
| article pdf uploaded. | 28 May 2016 11:04 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/6/520/pdf |
