@article{PORMA_1995__52_3_47474,
     author = {Udrea, Gheorghe},
     title = {A problem of {Diophantos-Fermat} and {Chebyshev} polynomials of the second kind.},
     journal = {Portugaliae mathematica},
     pages = {301--304},
     publisher = {mathdoc},
     volume = {52},
     number = {3},
     year = {1995},
     zbl = {0844.11013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1995__52_3_47474/}
}