| article html file updated | 7 February 2020 18:31 CET | Update | https://www.mdpi.com/2077-0472/6/4/62 |
| article html file updated | 4 May 2019 21:33 CEST | Update | N/A |
| article html file updated | 28 December 2016 05:25 CET | Update | N/A |
| article html file updated | 24 November 2016 04:54 CET | Original file | N/A |
| article xml uploaded. | 24 November 2016 04:53 CET | Update | https://www.mdpi.com/2077-0472/6/4/62/xml |
| article xml uploaded. | 24 November 2016 04:53 CET | Original file | N/A |
| article pdf uploaded. | 24 November 2016 04:53 CET | Version of Record | https://www.mdpi.com/2077-0472/6/4/62/pdf |
