@article{PORMA_1995__52_1_47375,
     author = {Haukkanen, Pentti},
     title = {On generalized {Landau} identities.},
     journal = {Portugaliae mathematica},
     pages = {29--38},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {1995},
     zbl = {0835.11003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1995__52_1_47375/}
}