| article html file updated | 8 February 2020 05:28 CET | Update | https://www.mdpi.com/2226-4787/5/2/26 |
| article html file updated | 24 September 2019 17:52 CEST | Update | - |
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| article html file updated | 29 June 2017 12:46 CEST | Update | - |
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| article xml uploaded. | 10 May 2017 08:29 CEST | Original file | https://www.mdpi.com/2226-4787/5/2/26/xml |
| article pdf uploaded. | 10 May 2017 08:29 CEST | Version of Record | https://www.mdpi.com/2226-4787/5/2/26/pdf |
