@article{MET_1976__23_186180,
     author = {D.P. Mittal},
     title = {On {Continuous} {Solutions} of a {Functional} {Equation.}},
     journal = {Metrika},
     pages = {31--40},
     publisher = {mathdoc},
     volume = {23},
     year = {1976},
     zbl = {0333.39006},
     url = {http://geodesic.mathdoc.fr/item/MET_1976__23_186180/}
}