Novak, V. 1976. Diurnalni aktivita druhu Hylesinus fraxini (Panz) za vyletu imag z napadenych vetvi jasanu (Col, Scolytidae) [Diurnal activity of Hylesinus fraxini at the time of swarming of the imagoes from affected branches of ash tree] . Acta Universitatis Palackianae Olomucensis Facultas Rerum Naturalium 51:141-148.