| article html file updated | 7 February 2020 13:28 CET | Update | https://www.mdpi.com/1424-8247/9/3/51 |
| article html file updated | 5 May 2019 06:52 CEST | Update | - |
| article html file updated | 27 March 2019 13:55 CET | Update | - |
| article html file updated | 9 November 2017 12:28 CET | Update | - |
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| article html file updated | 28 September 2016 11:58 CEST | Update | - |
| article html file updated | 17 August 2016 11:57 CEST | Original file | - |
| article xml uploaded. | 17 August 2016 11:56 CEST | Update | https://www.mdpi.com/1424-8247/9/3/51/xml |
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| article pdf uploaded. | 17 August 2016 11:56 CEST | Version of Record | https://www.mdpi.com/1424-8247/9/3/51/pdf |
