@article{ARM_1982__18_2_a1,
     author = {Kalas, Josef},
     title = {On a {{\textquotedblleft}Liapunov} like{\textquotedblright} function for an equation $\dot z=f(t,z)$ with a complex-valued function $f$},
     journal = {Archivum mathematicum},
     pages = {65--76},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1982},
     mrnumber = {683347},
     zbl = {0498.34039},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1982__18_2_a1/}
}