@misc{Kurek_Jan_Second,
 author={Kurek, Jan and Mikulski, Włodzimierz M.},
 howpublished={online},
 publisher={nakł. UMCS},
 language={eng},
 title={Second order nonholonomic connections from second order nonholonomic ones},
 type={artykuł},
 keywords={matematyka},
}