Oppenheimer Hi I m currently reading ppenheimer s book It s excellent he has a comprehensive iblyography and notes and uses previously published peer reviewed scientific papers It has a very comprehensive feel to it I haven t read Sykes book yet but looking at the appendices and index it doesn t have the sort of comprehensive or academic feel of Oppenheimer s work Still we can cite both and I suspect there will be many areas of agreement All the best Oppenheimer certainly argues strongly for the Iberian origin of most people from the British Isles though he mentions a paleolithic contribution from the Balkan refuge to England