Velcheva, I., Tomova, E., Arnaudova, D., Arnaudov, A. Morphological investigation on gills and liver of freshwater fish from dam lake "Studen kladenets". Sofia: 2010 с. pg. 364-368,.
Velcheva, I., Tomova, E., Arnaudova, D., Arnaudov, A. Morphological investigation on gills and liver of freshwater fish from dam lake "Studen kladenets". Sofia: 2010 с. pg. 364-368,.
Velcheva, I., Tomova, E., Arnaudova, D., Arnaudov, A. (2010) Morphological investigation on gills and liver of freshwater fish from dam lake "Studen kladenets", Sofia: с. pg. 364-368,.
Velcheva, I., Tomova, E., Arnaudova, D., & Arnaudov, A. (2010). Morphological investigation on gills and liver of freshwater fish from dam lake "Studen kladenets". Sofia: с. pg. 364-368.
Velcheva I, Tomova E, Arnaudova D, Arnaudov A. Morphological investigation on gills and liver of freshwater fish from dam lake "Studen kladenets". Sofia: 2010. p. с. pg. 364-368.