| article html file updated | 8 February 2020 02:56 CET | Update | https://www.mdpi.com/2304-6740/5/2/21 |
| article html file updated | 24 September 2019 04:10 CEST | Update | N/A |
| article html file updated | 4 May 2019 03:31 CEST | Update | N/A |
| article html file updated | 30 June 2017 08:23 CEST | Update | N/A |
| article html file updated | 5 April 2017 11:32 CEST | Original file | N/A |
| article xml uploaded. | 5 April 2017 11:31 CEST | Original file | https://www.mdpi.com/2304-6740/5/2/21/xml |
| article pdf uploaded. | 5 April 2017 11:31 CEST | Version of Record | https://www.mdpi.com/2304-6740/5/2/21/pdf |
