Jorma Sorjonen

Factors Affecting the Structure of Song and the Singing Behaviour of Some Northern European Passerine Birds

Jorma Sorjonen, J. Sorjonen, 1986 .

Transmission of the Two Most Characteristic Phrases of the Song of the Thrush Nightingale Luscinia luscinia in Different Environmental Conditions

Jorma Sorjonen, J. Sorjonen, 1983 .

Song Structure and Singing Strategies in the Genus Luscinia in Different Habitats and Geographical Areas

Jorma Sorjonen, J. Sorjonen, 1986 .