| article html file updated | 7 February 2020 03:51 CET | Update | https://www.mdpi.com/2304-6740/4/1/3 |
| article html file updated | 6 May 2019 01:46 CEST | Update | N/A |
| article html file updated | 26 March 2019 19:18 CET | Update | N/A |
| article html file updated | 19 April 2016 11:55 CEST | Original file | N/A |
| article pdf uploaded. | 26 January 2016 09:39 CET | Version of Record | https://www.mdpi.com/2304-6740/4/1/3/pdf |
| article xml uploaded. | 26 January 2016 09:39 CET | Original file | https://www.mdpi.com/2304-6740/4/1/3/xml |
