@article{MM2_1986__55_155138,
     author = {P.P. P\'alfy},
     title = {On {Partial} {Ordering} of {Chief} {Factors} in {Solvable} {Groups.}},
     journal = {Manuscripta mathematica},
     pages = {219--232},
     publisher = {mathdoc},
     volume = {55},
     year = {1986},
     zbl = {0596.20019},
     url = {http://geodesic.mathdoc.fr/item/MM2_1986__55_155138/}
}