| article html file updated | 6 February 2020 19:49 CET | Update | https://www.mdpi.com/2077-0472/5/2/344 |
| article html file updated | 20 September 2019 22:59 CEST | Update | N/A |
| article html file updated | 6 May 2019 17:31 CEST | Update | N/A |
| article html file updated | 26 March 2019 04:58 CET | Update | N/A |
| article html file updated | 21 August 2015 13:46 CEST | Original file | N/A |
| article pdf uploaded. | 17 June 2015 16:19 CEST | Version of Record | https://www.mdpi.com/2077-0472/5/2/344/pdf |
