| article html file updated | 6 February 2020 03:05 CET | Update | https://www.mdpi.com/2304-8158/2/3/295 |
| article html file updated | 8 May 2019 03:06 CEST | Update | N/A |
| article html file updated | 21 March 2019 00:57 CET | Update | N/A |
| article html file updated | 10 February 2017 03:40 CET | Update | N/A |
| article html file updated | 17 June 2015 11:04 CEST | Original file | N/A |
| article pdf uploaded. | 9 July 2013 11:43 CEST | Version of Record | https://www.mdpi.com/2304-8158/2/3/295/pdf |
