| article html file updated | 9 February 2020 04:21 CET | Update | https://www.mdpi.com/2075-4701/8/2/88 |
| article html file updated | 30 September 2019 05:30 CEST | Update | N/A |
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| article html file updated | 25 January 2018 17:29 CET | Original file | N/A |
| article xml uploaded. | 25 January 2018 17:27 CET | Original file | https://www.mdpi.com/2075-4701/8/2/88/xml |
| article pdf uploaded. | 25 January 2018 17:27 CET | Version of Record | https://www.mdpi.com/2075-4701/8/2/88/pdf |
