@article{MET_1990__37_3-4_176269,
     author = {I.A. Ahmad and S.G. Kochar},
     title = {Testing {Whether} {F} is {More} {IFR} than {G} .},
     journal = {Metrika},
     pages = {45--58},
     publisher = {mathdoc},
     volume = {37},
     number = {3-4},
     year = {1990},
     zbl = {0691.62046},
     url = {http://geodesic.mathdoc.fr/item/MET_1990__37_3-4_176269/}
}