| article html file updated | 7 February 2020 19:11 CET | Update | https://www.mdpi.com/2075-4701/6/12/308 |
| article html file updated | 22 September 2019 09:11 CEST | Update | - |
| article html file updated | 4 May 2019 20:09 CEST | Update | - |
| article html file updated | 28 December 2016 11:21 CET | Update | - |
| article html file updated | 7 December 2016 04:36 CET | Original file | - |
| article xml uploaded. | 7 December 2016 04:34 CET | Update | https://www.mdpi.com/2075-4701/6/12/308/xml |
| article xml uploaded. | 7 December 2016 04:34 CET | Original file | - |
| article pdf uploaded. | 7 December 2016 04:34 CET | Version of Record | https://www.mdpi.com/2075-4701/6/12/308/pdf |
