@article{ZNSL_1967_4_a3,
     author = {O. Demuth},
     title = {Lebesgue integral in constructive analysis},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {30--43},
     year = {1967},
     volume = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1967_4_a3/}
}