@article{BMMS_2012_35_4_a16,
     author = {Jia-Feng L\"u},
     title = {Quasi-Koszulity and {Minimal} {Horseshoe} {Lemma}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2012},
     volume = {35},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2012_35_4_a16/}
}