@article{MOMA_1984__98_178204,
     author = {V. Hutson},
     title = {A {Theorem} on {Average} {Liapunov} {Functions.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {267--276},
     publisher = {mathdoc},
     volume = {98},
     year = {1984},
     zbl = {0542.34043},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1984__98_178204/}
}