@article{VM_2011_13_2_a0,
     author = {Oleg Bodnar},
     title = {Geometric {Interpretation} and {Generalization} of the {Nonclassial} {Hyperbolic} {Functions}},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/VM_2011_13_2_a0/}
}