| article html file updated | 7 February 2020 17:05 CET | Update | https://www.mdpi.com/2304-8158/5/4/70 |
| article html file updated | 22 September 2019 04:04 CEST | Update | - |
| article html file updated | 5 May 2019 00:15 CEST | Update | - |
| article html file updated | 30 December 2016 01:59 CET | Update | - |
| article html file updated | 27 October 2016 12:23 CEST | Original file | - |
| article xml uploaded. | 27 October 2016 12:22 CEST | Original file | https://www.mdpi.com/2304-8158/5/4/70/xml |
| article pdf uploaded. | 27 October 2016 12:22 CEST | Version of Record | https://www.mdpi.com/2304-8158/5/4/70/pdf |
