@article{700642,
     title = {Atoms in uniformities and proximities},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Society of Czechoslovak Mathematicians and Physicist},
     address = {Praha},
     year = {1977},
     pages = {353-356},
     mrnumber = {MR0644640},
     zbl = {0374.54018},
     url = {http://dml.mathdoc.fr/item/700642}
}

Pelant, J.; Reiterman, J. Atoms in uniformities and proximities, dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. 353-356. http://gdmltest.u-ga.fr/item/700642/