@article{10_4064_aa_24_4_385_399,
     author = {Andrzej Schinzel},
     title = {On the product of the conjugates outside the unit circle of an algebraic number},
     journal = {Acta Arithmetica},
     pages = {385--399},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {1973},
     doi = {10.4064/aa-24-4-385-399},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-24-4-385-399/}
}