| article html file updated | 7 February 2020 12:42 CET | Update | https://www.mdpi.com/1420-3049/21/8/997 |
| article html file updated | 21 September 2019 22:13 CEST | Update | - |
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| article xml uploaded. | 2 August 2016 10:20 CEST | Update | https://www.mdpi.com/1420-3049/21/8/997/xml |
| article pdf uploaded. | 2 August 2016 10:20 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/8/997/pdf |