@inbook{book/137,
     author = {Loria Gino},
     title = {$\Tau$. Harriot},
     booktitle = {Istoria ton Mathematikon},
     series = {GDML\_Books},
     publisher = {$\Epsilon$.$\Mu$.$\Epsilon$.},
     year = {1972},
     url = {http://dml.mathdoc.fr/item/book/137}
}