@article{MR90047,
AUTHOR = "Kan, Daniel M.",
TITLE = "On c. s. s. complexes",
JOURNAL = "Amer. J. Math.",
FJOURNAL = "American Journal of Mathematics",
VOLUME = "79",
YEAR = "1957",
PAGES = "449--476",
ISSN = "0002-9327",
MRCLASS = "55.0X",
MRNUMBER = "90047",
MRREVIEWER = "J. C. Moore",
DOI = "10.2307/2372558"
}
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$