| article html file updated | 7 February 2020 07:23 CET | Update | https://www.mdpi.com/2075-4701/6/4/88 |
| article html file updated | 5 May 2019 18:24 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:07 CET | Update | N/A |
| article html file updated | 28 April 2016 12:12 CEST | Update | N/A |
| article html file updated | 16 April 2016 09:44 CEST | Original file | N/A |
| article xml uploaded. | 16 April 2016 09:43 CEST | Original file | https://www.mdpi.com/2075-4701/6/4/88/xml |
| article pdf uploaded. | 16 April 2016 09:43 CEST | Version of Record | https://www.mdpi.com/2075-4701/6/4/88/pdf |
