@article{10_4153_CMB_1962_014_3,
     author = {Iosifescu, Marius and Marcus, Solomon},
     title = {Sur un {Probl\'eme} de {P.} {Scherk,} {Concernant} la {Somme} des {Carr\'es} de {Deux} {D\'eriv\'ees}},
     journal = {Canadian mathematical bulletin},
     pages = {129--132},
     year = {1962},
     volume = {5},
     number = {2},
     doi = {10.4153/CMB-1962-014-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1962-014-3/}
}