@misc{Mormul_Piotr_The_2000,
 author={Mormul, Piotr},
 volume={48},
 editor={Polska Akademia Nauk.},
 number={1},
 copyright={Rights Reserved - Restricted Access},
 address={Warsaw},
 address={Warsaw},
 howpublished={online},
 year={2000},
 publisher={Polska Akademia Nauk. Centrum Upowszechniania Nauki.},
 language={eng},
 type={Text},
 title={The strange nongenericness of codimension 1 differential systems in dimension 4 revisited},
}