@article{10_4064_sm_126_1_27_50,
     author = {Steven Bloom},
     title = {First and second order {Opial} inequalities},
     journal = {Studia Mathematica},
     pages = {27--50},
     publisher = {mathdoc},
     volume = {126},
     number = {1},
     year = {1997},
     doi = {10.4064/sm-126-1-27-50},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-126-1-27-50/}
}