Gear Geometry and Applied Theory : spur involute gears, internal involute gears, noncircular gears, cycloidal gearing, involute helical gears with parallel axes, modified involute gears, involute helical gears with crossed axes, new version of novikov-wildhaber helical gears, face gear drives, worm gear drives, with cylindrical worms, double enveloping worm gear drives, spiral bevel gears, hypoid gear drives, planetary gear trains, generation of helicoids, design of flyblades, generation of surfaces by cnc machines, ball measurement, minimization of deviations of gear real tooth surfaces.