| article html file updated | 7 February 2020 10:16 CET | Update | https://www.mdpi.com/2076-0817/5/2/44 |
| article html file updated | 5 May 2019 12:45 CEST | Update | N/A |
| article html file updated | 27 March 2019 07:40 CET | Update | N/A |
| article html file updated | 4 July 2016 10:35 CEST | Update | N/A |
| article html file updated | 16 June 2016 15:29 CEST | Original file | N/A |
| article xml uploaded. | 16 June 2016 15:28 CEST | Original file | https://www.mdpi.com/2076-0817/5/2/44/xml |
| article pdf uploaded. | 16 June 2016 15:28 CEST | Version of Record | https://www.mdpi.com/2076-0817/5/2/44/pdf |
