| article html file updated | 6 February 2020 15:12 CET | Update | https://www.mdpi.com/1422-0067/16/1/1821 |
| article html file updated | 7 May 2019 02:27 CEST | Update | - |
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| article html file updated | 21 August 2015 05:52 CEST | Update | - |
| article html file updated | 28 January 2015 02:03 CET | Original file | - |
| article xml file uploaded | 28 January 2015 02:03 CET | Original file | https://www.mdpi.com/1422-0067/16/1/1821/xml |
| article pdf uploaded. | 14 January 2015 15:24 CET | Version of Record | https://www.mdpi.com/1422-0067/16/1/1821/pdf |
