@article{BUMI_2012_9_5_2_a11,
     author = {Calvaruso, G.},
     title = {Three-Dimensional {Paracontact} {Walker} {Structures}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {387--403},
     publisher = {mathdoc},
     volume = {Ser. 9, 5},
     number = {2},
     year = {2012},
     zbl = {1264.53036},
     mrnumber = {2977255},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2012_9_5_2_a11/}
}