Hello good day, my name ikechukwu junior i came from Nigeria, I have been living and working in Germany for the past 8yrs, I have my residence permit that is aufenthaltstitel and I have a 8yrs daughter in Nigeria I want her and her mother to visit me in Germany, which document did they need to present in Germany embassy in Nigeria, and which document they also need from me? As the father of the child that's living in Germany?