@Book{023214805,
title="Indexed categories and their applications",
series="Lecture notes in mathematics 661",
year="1978",
publisher="Springer",
address="Berlin",
keywords="Categories (Mathematics); Toposes; Algebra, Universal",
note="ed. by P. T. Johnstone ...",
note="Archivierung/Langzeitarchivierung gew{\"a}hrleistet PEBW XA-DE-BW pdager DE-31",
isbn="3540089144",
language="English"
}