@article{10_4064_ap112_2_6,
     author = {Youyu Wang and Wei Sun and Jing Yang},
     title = {Some new {Opial-type} inequalities involving
 higher order derivatives},
     journal = {Annales Polonici Mathematici},
     pages = {185--193},
     publisher = {mathdoc},
     volume = {112},
     number = {2},
     year = {2014},
     doi = {10.4064/ap112-2-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap112-2-6/}
}