Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 17-23

Published in Historia Naturalis Bulgarica, in 1996, in volume 6, pages 25-28

Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 29-35

Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 37-47

Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 49-58

Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 59-81

Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 82

Published in Historia naturalis bulgarica, in 1996, in volume 6, pages 83-92