| article html file updated | 7 February 2020 12:59 CET | Update | https://www.mdpi.com/2073-4352/6/8/90 |
| article html file updated | 5 May 2019 07:44 CEST | Update | - |
| article html file updated | 27 March 2019 12:58 CET | Update | - |
| article html file updated | 25 August 2016 11:46 CEST | Update | - |
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| article html file updated | 8 August 2016 07:45 CEST | Original file | - |
| article xml uploaded. | 8 August 2016 07:44 CEST | Update | https://www.mdpi.com/2073-4352/6/8/90/xml |
| article pdf uploaded. | 8 August 2016 07:44 CEST | Version of Record | https://www.mdpi.com/2073-4352/6/8/90/pdf |
