| article html file updated | 8 February 2020 01:07 CET | Update | https://www.mdpi.com/2075-4450/8/1/30 |
| article html file updated | 23 September 2019 17:50 CEST | Update | - |
| article html file updated | 4 May 2019 07:29 CEST | Update | - |
| article html file updated | 30 March 2017 11:03 CEST | Update | - |
| article html file updated | 9 March 2017 12:27 CET | Original file | - |
| article xml uploaded. | 9 March 2017 12:26 CET | Original file | https://www.mdpi.com/2075-4450/8/1/30/xml |
| article pdf uploaded. | 9 March 2017 12:26 CET | Version of Record | https://www.mdpi.com/2075-4450/8/1/30/pdf |
