| article html file updated | 6 February 2020 08:39 CET | Update | https://www.mdpi.com/1422-0067/15/4/6517 |
| article html file updated | 7 May 2019 15:47 CEST | Update | N/A |
| article html file updated | 21 March 2019 15:38 CET | Update | N/A |
| article html file updated | 20 August 2015 03:30 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:06 CEST | Update | N/A |
| article xml file uploaded | 14 August 2014 12:06 CEST | Update | https://www.mdpi.com/1422-0067/15/4/6517/xml |
| article html file updated | 12 May 2014 11:40 CEST | Update | N/A |
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| article html file updated | 12 May 2014 11:05 CEST | Original file | N/A |
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| article pdf uploaded. | 16 April 2014 13:19 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/4/6517/pdf |