Geodesic
On a “Liapunov like” function for an equation $\dot z=f(t,z)$ with a complex-valued function $f$
Archivum mathematicum, Tome 18 (1982) no. 2, pp. 65-76
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Classification : 34D05, 34D20, 34E05, 34M99 
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     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},
     year = {1982},
     volume = {18},
     number = {2},
     mrnumber = {683347},
     zbl = {0498.34039},
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     url = {http://geodesic.mathdoc.fr/item/ARM_1982_18_2_a1/}
}
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Kalas, Josef. On a “Liapunov like” function for an equation $\dot z=f(t,z)$ with a complex-valued function $f$. Archivum mathematicum, Tome 18 (1982) no. 2, pp. 65-76. http://geodesic.mathdoc.fr/item/ARM_1982_18_2_a1/

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