| article html file updated | 7 February 2020 07:25 CET | Update | https://www.mdpi.com/2075-4701/6/4/89 |
| article html file updated | 5 May 2019 18:20 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:10 CET | Update | N/A |
| article html file updated | 28 April 2016 12:13 CEST | Update | N/A |
| article html file updated | 18 April 2016 11:37 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2016 11:36 CEST | Update | https://www.mdpi.com/2075-4701/6/4/89/xml |
| article pdf uploaded. | 18 April 2016 11:36 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/4/89/pdf |
