| article html file updated | 7 February 2020 06:30 CET | Update | https://www.mdpi.com/2075-4701/6/4/76 |
| article html file updated | 5 May 2019 20:15 CEST | Update | - |
| article html file updated | 27 March 2019 00:28 CET | Update | - |
| article html file updated | 28 April 2016 12:07 CEST | Update | - |
| article html file updated | 28 March 2016 11:24 CEST | Original file | - |
| article xml uploaded. | 28 March 2016 11:20 CEST | Update | https://www.mdpi.com/2075-4701/6/4/76/xml |
| article pdf uploaded. | 28 March 2016 11:20 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/4/76/pdf |
