| article html file updated | 7 February 2020 07:32 CET | Update | https://www.mdpi.com/2073-4433/7/4/59 |
| article html file updated | 5 May 2019 18:06 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:25 CET | Update | N/A |
| article html file updated | 27 April 2016 09:23 CEST | Update | N/A |
| article html file updated | 20 April 2016 15:43 CEST | Original file | N/A |
| article xml uploaded. | 20 April 2016 15:42 CEST | Original file | https://www.mdpi.com/2073-4433/7/4/59/xml |
| article pdf uploaded. | 20 April 2016 15:42 CEST | Version of Record | https://www.mdpi.com/2073-4433/7/4/59/pdf |
