| article html file updated | 7 February 2020 03:41 CET | Update | https://www.mdpi.com/2076-2615/6/1/8 |
| article html file updated | 6 May 2019 02:05 CEST | Update | N/A |
| article html file updated | 26 March 2019 18:58 CET | Original file | N/A |
| article pdf uploaded. | 25 January 2016 15:34 CET | Updated version of record | https://www.mdpi.com/2076-2615/6/1/8/pdf |
| article pdf uploaded. | 21 January 2016 09:27 CET | Version of Record | https://www.mdpi.com/2076-2615/6/1/8/pdf-vor |
| article xml uploaded. | 21 January 2016 09:27 CET | Original file | https://www.mdpi.com/2076-2615/6/1/8/xml |
