Farhan, ahmed mohammed. “Calculation of the Electronic Properties Phthalocyanine (H2Pc), Silicon Phthalocyanine (Sipc), Phosphorus Phthalocyanine (PPc) and Energy Gap by the AM1 Method”. AlKadhim Journal for Computer Science, vol. 1, no. 2, Dec. 2023, pp. 71-80, doi:10.61710/akjs.v1i2.61.