| article html file updated | 7 February 2020 08:53 CET | Update | https://www.mdpi.com/1420-3049/21/5/640 |
| article html file updated | 21 September 2019 17:24 CEST | Update | - |
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| article html file updated | 26 May 2016 13:57 CEST | Update | - |
| article html file updated | 18 May 2016 14:54 CEST | Original file | - |
| article xml uploaded. | 18 May 2016 14:53 CEST | Original file | https://www.mdpi.com/1420-3049/21/5/640/xml |
| article pdf uploaded. | 18 May 2016 14:53 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/5/640/pdf |
