[Collagenase in the treatment of ulcus cruris].
@article{Zruba1974CollagenaseIT,
title={[Collagenase in the treatment of ulcus cruris].},
author={F. Z{\'a}ruba and A. Letl and H. Skrdlantov{\'a} and L. Brozkov{\'a} and V. Krs and K. Borc},
journal={Ceskoslovenska dermatologie},
year={1974},
volume={49 4},
pages={
235-8
}
}