[3] J. Kurzweil: 
On Fubini theorem for general Perron integral. Czech. Math. J. 23 (98), 1973, 286-297. 
MR 0333086 | 
Zbl 0267.26006 
[4] J. Kurzweil: 
Generalized ordinary differential equations and continuous dependence on a parameter. Czech. Math. J. 7 (82) (1957), 418-419. 
MR 0111875 | 
Zbl 0090.30002