@article{MM2_1978__24_154531,
     author = {A. Clausing},
     title = {On the {Openness} of {Continuous} {Averagings.}},
     journal = {Manuscripta mathematica},
     pages = {1--8},
     publisher = {mathdoc},
     volume = {24},
     year = {1978},
     zbl = {0378.46002},
     url = {http://geodesic.mathdoc.fr/item/MM2_1978__24_154531/}
}