| article html file updated | 7 February 2020 07:47 CET | Update | https://www.mdpi.com/2076-0817/5/2/39 |
| article html file updated | 5 May 2019 17:35 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:57 CET | Update | N/A |
| article html file updated | 4 July 2016 10:34 CEST | Update | N/A |
| article html file updated | 26 April 2016 10:17 CEST | Original file | N/A |
| article xml uploaded. | 26 April 2016 10:15 CEST | Original file | https://www.mdpi.com/2076-0817/5/2/39/xml |
| article pdf uploaded. | 26 April 2016 10:15 CEST | Version of Record | https://www.mdpi.com/2076-0817/5/2/39/pdf |
