El- Askalany, M. A.; Mousa, W. M.; Abo-El hadid, S. M. & Lotfy, H. S. (2008): Immune  characterization of Toxocara canis embyonated egg antigen in experimentally infected rabbits.  Egypt. J. Exp. Biol. (Zool.), 4: 131-137.

El- Askalany, M. A.; Abo-El hadid, S. M. & Lotfy, H. S. (2008):. Serodiagnosis of Ascaridia galli  in expermintally infected ballady chicken. Ass. Vet. Med. J.

Allam, G.  and Abo-El hadid, S. M. (2008):. Evaluation of the Protective Capacity of UV-exposed Clinostomum complanatum Metacercariae against Homologous Infection in Ardeola ibis ibis. Assoc. Vet. Med. J.

Abo El-Hdid, S. M. and Lotfy, H. S. 2007. Some studies on enteric parasites of  sheep in Beni-Suef Governorate.  Beni-Suef Vet. J.

Abo El-Hadid, S. M. and Allam, G. A.  (2007): Investigation of helminth parasitic infection

 of laboratory animals (Rats and Mice) with special reference to control of Hymenolepis nana as  a zoonotic parasite. Egypt. J. Exp. Biol. (Zool.), June, 2007.

Abo El- Hadid, S. M. and Lotfy, H. S. (2007): Some studies on helminth parasites of buff backed  heron (Ardeola ibis ibis) with special reference to its role in transmission of Clinostomum complanatum  in Beni- Suef Governorate. Beni-Suef Vet. Med. J. Nov. 2007.

Ehab, M. ; Abo El-Hadid, S. M.; Allam, G. and Abu-Elsaad, A. S. (2006): Random Amplified  Polymorphic DNA-Based Analysis Reveals Genetic Variations in The Populations of The Tape worm Hymenolepis species isolated from Rodents. J. Egypt. Ger. Soc. Zool. Vol. (5ID) Invertebrate Zoology & Prasitology, 69-89, July 2006.

 Lotfy, H. S. and Abo El-AHdid, S. M. (2005): Life Cycle of Philophathalmus species for the  first time in Egypt. Beni-Suef Vet. Med. J. 15 (2): 244-246.

Abo El-Hadid, S. M. and Lotfy, H. S. (2005): Some parasites causing diarrhea in goats in   Beni-Suef Governorate. Beni-Suef Vet. Med. J. 15 (2): 247-251.

Ibrahim, M.A.; Abo El-Hadid, S. M. and Mohamed, H. Meabed, (2005): Epidemiological aspects  of cryptosporidiosis in Beni-Suef Governorate. Beni-Suef Vet. Med. J. 15 (2): 171-176.

El- Sharif, A. M. and Abo El-AHdid, S. M. (2005): Epizootiological investigation about  different   internal parasitic affections amoung cattle calves in Beni-Suef Governorate. Giza Vet. Med.  J.