| article html file updated | 7 February 2020 07:51 CET | Update | https://www.mdpi.com/1996-1073/9/5/323 |
| article html file updated | 5 May 2019 17:28 CEST | Update | - |
| article html file updated | 27 March 2019 03:05 CET | Update | - |
| article html file updated | 26 May 2016 12:36 CEST | Update | - |
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| article xml uploaded. | 27 April 2016 09:21 CEST | Original file | https://www.mdpi.com/1996-1073/9/5/323/xml |
| article pdf uploaded. | 27 April 2016 09:21 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/5/323/pdf |
