| article html file updated | 7 February 2020 19:05 CET | Update | https://www.mdpi.com/2311-5629/2/4/24 |
| article html file updated | 22 September 2019 08:49 CEST | Update | - |
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| article html file updated | 5 December 2016 11:05 CET | Original file | - |
| article xml uploaded. | 5 December 2016 11:03 CET | Original file | https://www.mdpi.com/2311-5629/2/4/24/xml |
| article pdf uploaded. | 5 December 2016 11:03 CET | Version of Record | https://www.mdpi.com/2311-5629/2/4/24/pdf |
