| article html file updated | 7 February 2020 00:40 CET | Update | https://www.mdpi.com/2075-1680/4/4/518 |
| article html file updated | 21 September 2019 06:02 CEST | Update | N/A |
| article html file updated | 6 May 2019 07:34 CEST | Update | N/A |
| article html file updated | 26 March 2019 14:14 CET | Update | N/A |
| article html file updated | 1 September 2016 09:25 CEST | Update | N/A |
| article xml uploaded. | 1 September 2016 09:24 CEST | Update | https://www.mdpi.com/2075-1680/4/4/518/xml |
| article html file updated | 29 August 2016 08:35 CEST | Update | N/A |
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| article html file updated | 29 August 2016 06:43 CEST | Update | N/A |
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| article html file updated | 11 November 2015 11:18 CET | Original file | N/A |
| article xml file uploaded | 11 November 2015 11:18 CET | Original file | N/A |
| article pdf uploaded. | 6 November 2015 12:20 CET | Version of Record | https://www.mdpi.com/2075-1680/4/4/518/pdf |
