| article html file updated | 7 February 2020 14:04 CET | Update | https://www.mdpi.com/2071-1050/8/9/868 |
| article html file updated | 5 May 2019 05:46 CEST | Update | N/A |
| article html file updated | 27 March 2019 15:11 CET | Update | N/A |
| article html file updated | 27 September 2016 05:13 CEST | Update | N/A |
| article html file updated | 29 August 2016 13:37 CEST | Original file | N/A |
| article xml uploaded. | 29 August 2016 13:34 CEST | Update | https://www.mdpi.com/2071-1050/8/9/868/xml |
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| article xml uploaded. | 29 August 2016 13:34 CEST | Update | N/A |
| article xml uploaded. | 29 August 2016 13:34 CEST | Original file | N/A |
| article pdf uploaded. | 29 August 2016 13:34 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/9/868/pdf |
