| article html file updated | 7 February 2020 03:35 CET | Update | https://www.mdpi.com/2075-4701/6/1/26 |
| article html file updated | 6 May 2019 02:18 CEST | Update | - |
| article html file updated | 26 March 2019 18:46 CET | Original file | - |
| article pdf uploaded. | 20 January 2016 14:15 CET | Updated version of record | https://www.mdpi.com/2075-4701/6/1/26/pdf |
| article pdf uploaded. | 19 January 2016 09:13 CET | Version of Record | https://www.mdpi.com/2075-4701/6/1/26/pdf-vor |
| article xml uploaded. | 19 January 2016 09:13 CET | Original file | https://www.mdpi.com/2075-4701/6/1/26/xml |
