Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 25-32

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 33-37

Published in Historia Naturalis Bulgarica, in 2000, in volume 11, pages 39-46

Published in Historia Naturalis Bulgarica, in 2000, in volume 11, pages 47-60

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 61-64

Published in Historia Naturalis Bulgarica, in 2000, in volume 11, pages 65-72

Published in Historia Naturalis Bulgarica, in 2000, in volume 11, pages 73-80

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 81-83

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 85-95

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 97-105

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 107-116

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 117-125

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 127-131

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 133-138

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 139-145

Published in Historia naturalis bulgarica, in 2000, in volume 11, pages 146

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 5-15

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 17-27

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 29-31

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 33-39

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 41-58

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 59-69

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 71-87

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 89-128

Published in Historia naturalis bulgarica, in 2000, in volume 12, pages 129-146