@article{ZNSL_1971_22_a18,
     author = {O. I. Panich and V. A. Solonnikov},
     title = {On a~question concerning equivalent right regularisator},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {192--195},
     publisher = {mathdoc},
     volume = {22},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1971_22_a18/}
}