| article html file updated | 8 February 2020 05:02 CET | Update | https://www.mdpi.com/2078-2489/8/2/51 |
| article html file updated | 3 May 2019 23:32 CEST | Update | - |
| article html file updated | 28 June 2017 13:48 CEST | Update | - |
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| article xml uploaded. | 4 May 2017 12:55 CEST | Original file | https://www.mdpi.com/2078-2489/8/2/51/xml |
| article pdf uploaded. | 4 May 2017 12:55 CEST | Version of Record | https://www.mdpi.com/2078-2489/8/2/51/pdf |
