@misc{the+conservation+and+restoration+of+historical+egyptian+polish+and+hungerian+e+i+hungarian+limestone+monuments+and+the+evaluation+of+commercial+stone+consolidants,
    author = {Ahmed, Hatem Tawfik},
    title = {The conservation and restoration of historical Egyptian, Polish and Hungerian [e.i. Hungarian] limestone monuments and the evaluation of commercial stone consolidants},
    publisher = {[s.n.]},
    date = {2004}
}