Dean, A. R. 1985 |
Review of British status and identification of Greenish Warbler Phylloscopus trochiloides |
British Birds 78: 437-450 |
Have, T. M. van der 1985 |
Subspecies identification of two Yellow-browed Warblers Phylloscopus inornatus in the Netherlands
in 1982 |
Dutch Birding 7: 129-133 |
Ijzendoorn, E. J. van 1981 |
Differences between two Radde's Warblers Phylloscopus schwarzi in Netherland in October
1981 |
Dutch Birding 3: 113 |
Lyngs, P. & J. Rabøl 1983 |
Invasion fra øst |
Fugle 1983(1): 20-21 |
Madge, S. C. & R. Grimmett 1984 |
Field identification of Radde's Phylloscopus schwarzi and Dusky Warblers Phylloscopus fuscatus |
British Birds 80: 593-604 |
Mild, K. 1987 |
Sovjet Bird Songs. Kassette |
Kobbarvägen 23, S-17572, Järfalla, Sverige |
Olsen, K. M. 1988 |
Sjældne fugle i Danmark og Grønland i 1986 og 1987 |
Dansk Orn. Foren. Tidsskr. 82: 81-100 |
Peterson, R. T., G. R. Mountfort & P. A. D. Hollom 1985 |
Europas Fugle. (Oversat og bearbejdet af D. Boertmann & J. Fjeldså) |
G.E.C.Gads forlag |
Pettersson, M. 1988 |
Guide for fältbestämning av Phylloscopus-sångare |
Fältbiologen 1988(2): 17-21 |
Round, P. D. 1988 |
Field identification of Radde's Phylloscopus schwarzi and Dusky Warblers Phylloscopus fuscatus |
British Birds 81: 532 |
Sharrock, J. T. R. (red.) 1980 |
The frontiers of bird identification |
Macmillan, London |
Svensson, L. 1984a |
Sovjet birds. Kassette |
Lars Svensson, Stockholm |
Svensson, L. 1984b |
Identification guide to European passerines. 3rd ed. |
Märstatryck, Stockholm |
Svensson, L. 1985 |
Subspecies identity of Yellowbrowed Warblers Phylloscopus inornatus at Delft in winter of 1982/83 |
Dutch Birding 7: 145 |
Williamson, K. 1967 |
Identification for ringers 2, 2nd ed. |
BTO, Tring |
Ullman, M. 1985 |
Brunsångare Phylloscopus fuscatus vid Segerstad 27. Oktober 1981 |
Calidris 14: 85-87 |