| article html file updated | 7 February 2020 19:46 CET | Update | https://www.mdpi.com/2076-3417/6/12/438 |
| article html file updated | 22 September 2019 12:20 CEST | Update | - |
| article html file updated | 4 May 2019 18:53 CEST | Update | - |
| article html file updated | 27 December 2016 11:09 CET | Update | - |
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| article xml uploaded. | 16 December 2016 10:32 CET | Original file | https://www.mdpi.com/2076-3417/6/12/438/xml |
| article pdf uploaded. | 16 December 2016 10:32 CET | Version of Record | https://www.mdpi.com/2076-3417/6/12/438/pdf |
