*4th International Workshop on Functional and Operatorial Statistics (IWFOS 2017)* *Third Announcement: extended deadline and possibility for submitting short abstracts (one page)* Dear Colleagues, Dear Friends, We announce that: *SUBMISSIONS: *Authors can choose between submitting short contributions (6-8 pages in the required format, as up to now) or short abstracts (one page). Accepted short contributions will be collected in a book published by *Springer* <http://www.springer.com/gp/>, but not the short abstracts. *DEADLINE TO SUBMIT SHORT CONTRIBUTIONS: *December 31st, 2016. January 23rd, 2017. *DEADLINE TO SUBMIT SHORT ABSTRACTS FOR ORAL PRESENTATION: *January 23rd, 2017. *DEADLINE TO SUBMIT SHORT ABSTRACTS FOR POSTER PRESENTAT.: *May 18th, 2017. More information can be found at the* WEBSITE: *http://iwfos2017.udc.es *CONTACT: *iwfos2017@udc.es <iwfos2017@udc.esÂ> Thank you for your attention. Hoping to see you in A Coruña, Sincerely Yours, On behalf of the Scientific and Organizing Committees, Ricardo Cao Philippe Vieu Germán Aneiros Enea Bongiorno