biblatex order
\usepackage[sorting=none]{biblatex}
% biblatex knows various schemes for sorting, these are:
% nty: Sort by name, title, year.
% nyt: Sort by name, year, title.
% nyvt: Sort by name, year, volume, title.
% anyt: Sort by alphabetic label, name, year, title.
% anyvt: Sort by alphabetic label, name, year, volume, title.
% ynt: Sort by year, name, title.
% ydnt: Sort by year (descending), name, title.
% none: Do not sort at all. All entries are processed in citation order.
% debug: Sort by entry key. This is intended for debugging only.