| article html file updated | 7 February 2020 02:30 CET | Update | https://www.mdpi.com/2076-3417/5/4/1992 |
| article html file updated | 6 May 2019 04:27 CEST | Update | - |
| article html file updated | 26 March 2019 16:54 CET | Original file | - |
| article pdf uploaded. | 22 December 2015 09:21 CET | Updated version of record | https://www.mdpi.com/2076-3417/5/4/1992/pdf |
| article pdf uploaded. | 21 December 2015 13:59 CET | Version of Record | https://www.mdpi.com/2076-3417/5/4/1992/pdf-vor |
| article xml uploaded. | 21 December 2015 13:59 CET | Original file | https://www.mdpi.com/2076-3417/5/4/1992/xml |
