| article html file updated | 7 February 2020 22:47 CET | Update | https://www.mdpi.com/2077-0383/6/2/14 |
| article html file updated | 23 September 2019 04:35 CEST | Update | N/A |
| article html file updated | 4 May 2019 12:28 CEST | Update | N/A |
| article html file updated | 2 March 2017 09:48 CET | Update | N/A |
| article html file updated | 14 February 2017 12:26 CET | Update | N/A |
| article xml uploaded. | 14 February 2017 12:25 CET | Update | https://www.mdpi.com/2077-0383/6/2/14/xml |
| article pdf uploaded. | 14 February 2017 12:25 CET | Updated version of record | https://www.mdpi.com/2077-0383/6/2/14/pdf |
| article html file updated | 7 February 2017 12:38 CET | Original file | N/A |
| article xml uploaded. | 7 February 2017 12:37 CET | Original file | N/A |
| article pdf uploaded. | 7 February 2017 12:37 CET | Version of Record | https://www.mdpi.com/2077-0383/6/2/14/pdf-vor |
