| article html file updated | 6 February 2020 07:27 CET | Update | https://www.mdpi.com/2075-1680/3/1/64 |
| article html file updated | 20 September 2019 06:05 CEST | Update | - |
| article html file updated | 7 May 2019 18:17 CEST | Update | - |
| article html file updated | 21 March 2019 12:47 CET | Update | - |
| article html file updated | 19 August 2017 10:10 CEST | Original file | - |
| article xml uploaded. | 19 August 2017 10:09 CEST | Original file | https://www.mdpi.com/2075-1680/3/1/64/xml |
| article pdf uploaded. | 21 February 2014 15:49 CET | Version of Record | https://www.mdpi.com/2075-1680/3/1/64/pdf |
