In this article we give an introduction to mixed motives and sketch a couple of ways to construct examples.
@article{urn:eudml:doc:40429,
title = {On extensions of mixed motives.},
journal = {Collectanea Mathematica},
volume = {48},
year = {1997},
pages = {97-113},
zbl = {0890.14001},
mrnumber = {MR1464019},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:40429}
}
Deninger, Christopher. On extensions of mixed motives.. Collectanea Mathematica, Tome 48 (1997) pp. 97-113. http://gdmltest.u-ga.fr/item/urn:eudml:doc:40429/