@article{HHA_2005_7_2_a2,
     author = {Tom Lada and James Stasheff},
     title = {Introduction},
     journal = {Homology, homotopy, and applications},
     pages = {3--3},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/HHA_2005_7_2_a2/}
}