| article html file updated | 9 February 2020 11:17 CET | Update | https://www.mdpi.com/2075-4701/8/4/213 |
| article html file updated | 1 October 2019 23:36 CEST | Update | - |
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| article html file updated | 26 March 2018 12:03 CEST | Original file | - |
| article xml uploaded. | 26 March 2018 12:02 CEST | Update | https://www.mdpi.com/2075-4701/8/4/213/xml |
| article pdf uploaded. | 26 March 2018 12:02 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/213/pdf |