| article html file updated | 9 February 2020 18:20 CET | Update | https://www.mdpi.com/2311-5629/4/2/32 |
| article html file updated | 3 October 2019 18:48 CEST | Update | - |
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| article html file updated | 22 May 2018 13:35 CEST | Update | - |
| article xml uploaded. | 22 May 2018 13:34 CEST | Update | https://www.mdpi.com/2311-5629/4/2/32/xml |
| article pdf uploaded. | 22 May 2018 13:34 CEST | Updated version of record | https://www.mdpi.com/2311-5629/4/2/32/pdf |
| article html file updated | 20 May 2018 07:25 CEST | Original file | - |
| article pdf uploaded. | 20 May 2018 07:24 CEST | Version of Record | https://www.mdpi.com/2311-5629/4/2/32/pdf-vor |
