@article{PORMA_1971__30_1_115134,
     author = {Tavathia, B.S.},
     title = {Certain theorems in operational calculus involving integrals containing hyperbolic functions},
     journal = {Portugaliae mathematica},
     pages = {21--28},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1971},
     mrnumber = {0304990},
     zbl = {0228.44003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1971__30_1_115134/}
}