| article html file updated | 9 February 2020 12:02 CET | Update | https://www.mdpi.com/2226-4787/6/2/29 |
| article html file updated | 2 October 2019 04:03 CEST | Update | - |
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| article html file updated | 27 June 2018 09:23 CEST | Update | - |
| article html file updated | 31 March 2018 08:33 CEST | Original file | - |
| article xml uploaded. | 31 March 2018 08:32 CEST | Original file | https://www.mdpi.com/2226-4787/6/2/29/xml |
| article pdf uploaded. | 31 March 2018 08:32 CEST | Version of Record | https://www.mdpi.com/2226-4787/6/2/29/pdf |
