| article html file updated | 6 February 2020 00:30 CET | Update | https://www.mdpi.com/2076-3417/3/1/139 |
| article html file updated | 8 May 2019 08:33 CEST | Update | - |
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| article html file updated | 17 June 2015 06:25 CEST | Update | - |
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| article xml file uploaded | 3 February 2015 03:50 CET | Original file | https://www.mdpi.com/2076-3417/3/1/139/xml |
| article pdf uploaded. | 8 February 2013 08:32 CET | Version of Record | https://www.mdpi.com/2076-3417/3/1/139/pdf |
