| article html file updated | 7 February 2020 15:01 CET | Update | https://www.mdpi.com/2077-0472/6/3/47 |
| article html file updated | 5 May 2019 04:02 CEST | Update | - |
| article html file updated | 29 September 2016 08:28 CEST | Update | - |
| article html file updated | 15 September 2016 05:01 CEST | Original file | - |
| article xml uploaded. | 15 September 2016 04:59 CEST | Update | https://www.mdpi.com/2077-0472/6/3/47/xml |
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| article pdf uploaded. | 15 September 2016 04:59 CEST | Version of Record | https://www.mdpi.com/2077-0472/6/3/47/pdf |
