| article html file updated | 6 February 2020 14:54 CET | Update | https://www.mdpi.com/1420-3049/20/1/503 |
| article html file updated | 20 September 2019 16:34 CEST | Update | - |
| article html file updated | 7 May 2019 03:04 CEST | Update | - |
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| article html file updated | 21 August 2015 05:09 CEST | Update | - |
| article html file updated | 27 January 2015 11:10 CET | Original file | - |
| article xml file uploaded | 27 January 2015 11:10 CET | Original file | https://www.mdpi.com/1420-3049/20/1/503/xml |
| article pdf uploaded. | 31 December 2014 11:25 CET | Version of Record | https://www.mdpi.com/1420-3049/20/1/503/pdf |
