@article{RCM_1967__1_181547,
     author = {G. Restrepo},
     title = {la ecuacion d ...dt = grad f(...(t)) en un espacio de hilbert},
     journal = {Revista colombiana de matematicas},
     pages = {21--25},
     publisher = {mathdoc},
     volume = {1},
     year = {1967},
     url = {http://geodesic.mathdoc.fr/item/RCM_1967__1_181547/}
}