@article{zu228408,
          number = {1},
           month = {?????},
          author = {?. ?. ?????},
           title = {On the Cauchy theorem for hyperholomorphic functions
of spatial variable},
       publisher = {Springer Science+Business Media},
         journal = {Journal of Mathematical Sciences},
           pages = {1--6},
            year = {2018},
        keywords = {Quaternion, Dirac operator, differentiable function.},
             url = {http://eprints.zu.edu.ua/28408/},
        abstract = {We proved a theorem about the integral of quaternionic-differentiable functions of spatial
variable over the closed surface. It is an analog of the Cauchy theorem from complex analysis.}
}