Rodríguez-Prieto I., Fernández-Juricic E. . 2005 .
Effects of direct human disturbance on the endemic Iberian frog Rana iberica at individual and population levels
.
Biological Conservation
,
123(1)
:
1-9
Russell AF . 1999 .
Ecological constraints and the cooperative breeding system of the long-tailed tit Aegithalos caudatus
.
PhD Thesis, University of Sheffield
.
Sheffield
Schreur G., de Paz O., Almenar D., Garin I., Aihartza J., Goiti U., Salsamendi E. . 2006 .
Estudios cientificos sobre Quirópteros Amenazados en Extremadura
.
Serra-Cobo J., Marqués-Bonet T., Martínez-Rica J. P. . 2000 .
Ecological segregation between Rana pyrenaica and Rana temporaria and differential predation of Euproctus asper on their tadpoles
.
Netherlands Journal of Zoology
,
50(1)
:
65-73
Tejedo M . 1991 .
Effect of predation by two species of sympatric tadpoles on embryo survival in natterjack toads (Bufo calamita)
.
Herpetologica
,
47
:
322-327
Werner Y.L. . 1986 .
Evolutionary implication of occasional (non-mimetic) behavioural triangulation of the head in snakes (Coluber rhodorhachis and Malpolon monspessulanus)
.
The Snake
,
18
:
37-41