@article{PIM_1975_N_S_18_32_a22,
     author = {Keng-Teh Tan},
     title = {How {Many} {Algebraic} {(Finite)} {Extensions} {Over} {The} {Rationals}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {193 },
     publisher = {mathdoc},
     volume = {_N_S_18},
     number = {32},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/PIM_1975_N_S_18_32_a22/}
}