| article html file updated | 7 February 2020 02:27 CET | Update | https://www.mdpi.com/1424-8220/15/12/29902 |
| article html file updated | 6 May 2019 04:32 CEST | Update | N/A |
| article html file updated | 26 March 2019 16:50 CET | Original file | N/A |
| article pdf uploaded. | 21 December 2015 10:53 CET | Updated version of record | https://www.mdpi.com/1424-8220/15/12/29902/pdf |
| article pdf uploaded. | 19 December 2015 07:43 CET | Version of Record | https://www.mdpi.com/1424-8220/15/12/29902/pdf-vor |
| article xml uploaded. | 19 December 2015 07:43 CET | Original file | https://www.mdpi.com/1424-8220/15/12/29902/xml |
