@article{ef379dbc84344b9cb016a6aa15eb6008,
title = "Pregnancy diagnosis in sows: direct ELISA for estrone in feces and its prospects for an on farm test, in comparison to ultrasonography",
keywords = "Direct ELISA, Estrone, Porcine feces, Pregnancy diagnosis, Ultrasonography",
author = "E.A. Vos and \{van Oord\}, R. and M.A.M. Taverne and T.A.M. Kruip",
year = "1999",
doi = "10.1016/S0093-691X(99)00031-X",
language = "English",
volume = "51",
pages = "829--840",
journal = "Theriogenology",
issn = "0093-691X",
publisher = "Elsevier",
}