| article html file updated | 7 February 2020 22:37 CET | Update | https://www.mdpi.com/1422-0067/18/2/316 |
| article html file updated | 23 September 2019 03:33 CEST | Update | - |
| article html file updated | 4 May 2019 12:49 CEST | Update | - |
| article html file updated | 2 March 2017 09:56 CET | Update | - |
| article html file updated | 4 February 2017 05:37 CET | Original file | - |
| article pdf uploaded. | 3 February 2017 13:47 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/316/pdf |
