| article html file updated | 8 February 2020 02:22 CET | Update | https://www.mdpi.com/2073-4433/8/4/63 |
| article html file updated | 24 September 2019 00:57 CEST | Update | - |
| article html file updated | 4 May 2019 04:46 CEST | Update | - |
| article html file updated | 28 April 2017 05:28 CEST | Update | - |
| article html file updated | 28 March 2017 09:48 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 09:36 CEST | Update | https://www.mdpi.com/2073-4433/8/4/63/xml |
| article pdf uploaded. | 28 March 2017 09:36 CEST | Version of Record | https://www.mdpi.com/2073-4433/8/4/63/pdf |
