RT Journal Article SR Electronic A1 LIŠKA, Vladimír T1 TRANSFORMATION THREE-DIMENSIONAL INTEGRALS JF Trends in education YR 2011 VO 4 IS 1 SP 112 OP 115 UL https://tvv-journal.upol.cz/en/artkey/tvv-201101-0027.php AB Substitution Method to multidimensional integrals is a powerful tool for calculating them, but its routine application can lead to lengthy calculations. This fact presents the example of three-dimensional integral, where the fundamental field is cone with its axis of symmetry o z .