I think you don t get it Since when is literature referring to a specific subject spam or promotion That is plain nonsense If that is your simplistic idea you should leave all references and all notes out mind you they can all be fake I doubt you have an academic education otherwise you would know that If there is a plane crash those concerned need to know what is done about it In many cases similar problems cause similar accidents All our books give nothing else then the original text of the official investigation report in English and in the same format for comparison purposes we do not add something neither do we leave anything out How do you think someone from Nairobi or from Irkuts or Ouagadougou can get hold of a copy of a Russian or Indian or Mongolian investigation report There is no Russian or some official from Sierra Leona that will ever send you that Our books go back to 1980 you have no idea how primitive those old reports are The books are copy righted to a Dutch public foundation by the name Sagip Kabayan registered at the Chamber of Commerce in s Hertogenbosch Netherlands under number 17282016 You can check that out Dr Dirk J Barreveld Netherlands