| article html file updated | 8 February 2020 03:43 CET | Update | https://www.mdpi.com/2077-0383/6/4/46 |
| article html file updated | 24 September 2019 08:34 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:57 CEST | Update | N/A |
| article html file updated | 28 April 2017 06:48 CEST | Update | N/A |
| article html file updated | 17 April 2017 13:48 CEST | Original file | N/A |
| article xml uploaded. | 17 April 2017 13:47 CEST | Original file | https://www.mdpi.com/2077-0383/6/4/46/xml |
| article pdf uploaded. | 17 April 2017 13:47 CEST | Version of Record | https://www.mdpi.com/2077-0383/6/4/46/pdf |
