RajchardJ., NavrátilJ., FrazierR. J., JežkováE. and MarkováK. (2020) “Comparison of spring and summer clutches of Great Crested Grebes (Podiceps cristatus) ”, Acta Zoologica Academiae Scientiarum Hungaricae, 66(4), pp. 393–401. doi: 10.17109/AZH.66.4.393.2020.