| article html file updated | 8 February 2020 05:26 CET | Update | https://www.mdpi.com/2075-4450/8/2/50 |
| article html file updated | 24 September 2019 17:39 CEST | Update | - |
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| article html file updated | 30 June 2017 05:43 CEST | Update | - |
| article html file updated | 23 May 2017 03:56 CEST | Update | - |
| article html file updated | 9 May 2017 12:56 CEST | Original file | - |
| article xml uploaded. | 9 May 2017 12:55 CEST | Original file | https://www.mdpi.com/2075-4450/8/2/50/xml |
| article pdf uploaded. | 9 May 2017 12:55 CEST | Version of Record | https://www.mdpi.com/2075-4450/8/2/50/pdf |
