I would like the simple command \cite produces an entry in the bibliography (at the end of the doc) and in the footnote, using the format:
bla bla bla~\cite{myref} bla bla.
whose result is:
bla bla bla [1] bla bla.
[1] author, journal, year
I have found this : Biblatex cite with footnote only once, with use of brackets
[edit]: It is almost what I need, but without the superscript and with less information in the footnote (only author, journal, year, volume, page). But I have no idea how to do that.
[edit2]: I cannot find a solution. As I should send my thesis very soon, I am asking for help, once again. Many thanks.
Thanks for your help!

\footcitecommand? – Bernard Aug 30 '14 at 21:10\usepackage[citestyle=authortitle,bibstyle=numeric,url=true,isbn=false,backend=biber,sorting=nyt]{biblatex}but it produces an exponent like a footnote. I would like a usual numeric citation [1] that produces a footnote and an entry in the biblio at the end (order by author, with a backref (cited on pages: 2, 3 and 5) – nbi Aug 31 '14 at 19:15styletonumeric. Of course you could then modifymoreciteto print author, journal and year.:\newbibmacro*{morecite}{% \printnames{labelname}% \setunit{\addcomma\space}% \printfield{journaltitle}% \setunit{\addcomma\space}% \printfield{year}}(modulo line breaks after the%s, of course). – moewe Sep 05 '14 at 06:57