@article{CMUC_2011_52_2_a0,
     author = {Hawthorn, Ian and Stokes, Tim},
     title = {Near heaps},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {163--175},
     year = {2011},
     volume = {52},
     number = {2},
     mrnumber = {2848403},
     zbl = {1227.20063},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2011_52_2_a0/}
}