| article html file updated | 7 February 2020 19:06 CET | Update | https://www.mdpi.com/2073-4344/6/12/194 |
| article html file updated | 22 September 2019 08:54 CEST | Update | - |
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| article html file updated | 27 December 2016 11:26 CET | Update | - |
| article html file updated | 5 December 2016 14:16 CET | Original file | - |
| article xml uploaded. | 5 December 2016 14:14 CET | Original file | https://www.mdpi.com/2073-4344/6/12/194/xml |
| article pdf uploaded. | 5 December 2016 14:14 CET | Version of Record | https://www.mdpi.com/2073-4344/6/12/194/pdf |
