%0 Journal Article %A Герус, О. Ф. %D 2012 %F zu2:8632 %I Department of Mechanics and Mathematics, Ivan Franko National University of Lviv %J International Conference dedicated to 120-th anniversary of STEFAN BANACH 17 – 21 September 2012, Lviv, Ukraine %P 132 %T On hyperholomorphic functions of spatial variable %U http://eprints.zu.edu.ua/8632/ %X We proved a theorem about integral of quaternionic-differentiable functions of spatial variable over the closed surface. It is an analog of the Cauchy theorem from complex analysis.