| article html file updated | 9 February 2020 05:40 CET | Update | https://www.mdpi.com/2227-7102/8/1/24 |
| article html file updated | 30 September 2019 13:34 CEST | Update | - |
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| article html file updated | 27 March 2018 15:20 CEST | Update | - |
| article html file updated | 6 February 2018 13:59 CET | Original file | - |
| article xml uploaded. | 6 February 2018 13:58 CET | Original file | https://www.mdpi.com/2227-7102/8/1/24/xml |
| article pdf uploaded. | 6 February 2018 13:58 CET | Version of Record | https://www.mdpi.com/2227-7102/8/1/24/pdf |
