| article html file updated | 6 February 2020 09:53 CET | Update | https://www.mdpi.com/2073-4352/4/2/123 |
| article html file updated | 7 May 2019 13:17 CEST | Update | N/A |
| article html file updated | 21 March 2019 18:38 CET | Update | N/A |
| article html file updated | 20 August 2015 09:37 CEST | Update | N/A |
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| article xml file uploaded | 23 March 2015 07:42 CET | Update | https://www.mdpi.com/2073-4352/4/2/123/xml |
| article html file updated | 20 March 2015 05:34 CET | Original file | N/A |
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| article pdf uploaded. | 12 June 2014 14:22 CEST | Updated version of record | https://www.mdpi.com/2073-4352/4/2/123/pdf |
| article pdf uploaded. | 11 June 2014 15:51 CEST | Version of Record | https://www.mdpi.com/2073-4352/4/2/123/pdf-vor |
