@article{10_4064_aa_17_4_407_430,
     author = {J. Proschan},
     title = {On the changes of sign of a certain class of error functions},
     journal = {Acta Arithmetica},
     pages = {407--430},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {1970},
     doi = {10.4064/aa-17-4-407-430},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-17-4-407-430/}
}