1. Identification of nucleolar organizing regions and parental chromosomes in F1 hybrid of Dendranthema japonica and Tanacetum vulgare simultaneously by fluorescence in situ hybridization and fluorescence genomic in situ hybridization;Abd El-Twab;Chromosome Sci.,1999
2. Genome territories of Dendranthema horaimontana in mitotic nuclei of F1 hybrid between D. horaimontana and Tanacetum parthenium;Abd El-Twab;Chromosome Sci.,2001
3. Molecular cytogenetic identification of the parental genomes in the intergeneric hybrid between Leucanthemella linears and Nipponanthemum nipponicum during meiosis and mitosis;Abd El-Twab;Caryologia,2001
4. Physical mapping of 5S rDNA in chromosomes of Dendranthema by fluorescence in situ hybridization;Abd El-Twab;Chromosome Sci.,2002
5. Identification of parental chromosome of artificial intergeneric F1 hybrid between Dendranthema horaimontana and Nipponanthemum Nipponicum by fluorescence in situ hybridization (GISH) and fluorescence in situ hybridization (FISH);Abd El-Twab;Chromosome Sci.,2004