| article html file updated | 6 February 2020 05:21 CET | Update | https://www.mdpi.com/2077-0383/2/4/242 |
| article html file updated | 20 September 2019 02:49 CEST | Update | N/A |
| article html file updated | 7 May 2019 22:30 CEST | Update | N/A |
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| article html file updated | 25 June 2015 12:08 CEST | Update | N/A |
| article xml file uploaded | 25 June 2015 12:08 CEST | Update | https://www.mdpi.com/2077-0383/2/4/242/xml |
| article html file updated | 16 December 2014 04:50 CET | Update | N/A |
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| article html file updated | 10 December 2014 09:53 CET | Original file | N/A |
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| article pdf uploaded. | 4 November 2013 15:39 CET | Version of Record | https://www.mdpi.com/2077-0383/2/4/242/pdf |
