| article html file updated | 7 February 2020 12:23 CET | Update | https://www.mdpi.com/2075-4698/6/3/21 |
| article html file updated | 5 May 2019 08:54 CEST | Update | N/A |
| article html file updated | 27 March 2019 11:33 CET | Update | N/A |
| article html file updated | 29 September 2016 12:03 CEST | Update | N/A |
| article html file updated | 27 July 2016 11:14 CEST | Original file | N/A |
| article xml uploaded. | 27 July 2016 11:13 CEST | Original file | https://www.mdpi.com/2075-4698/6/3/21/xml |
| article pdf uploaded. | 27 July 2016 11:13 CEST | Version of Record | https://www.mdpi.com/2075-4698/6/3/21/pdf |
