| article html file updated | 7 February 2020 23:25 CET | Update | https://www.mdpi.com/2075-4701/7/2/56 |
| article html file updated | 23 September 2019 08:02 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:13 CEST | Update | N/A |
| article html file updated | 1 March 2017 03:54 CET | Update | N/A |
| article html file updated | 15 February 2017 07:46 CET | Original file | N/A |
| article xml uploaded. | 15 February 2017 07:39 CET | Original file | https://www.mdpi.com/2075-4701/7/2/56/xml |
| article pdf uploaded. | 15 February 2017 07:39 CET | Version of Record | https://www.mdpi.com/2075-4701/7/2/56/pdf |
