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   _____     ___      _____      ___      ______  
  / ___//   / _ \\   / ____||   / _ \\   /_   _// 
  \___ \\  | / \ || / //---`'  / //\ \\  `-| |,-  
  /    //  | \_/ || \ \\___   |  ___  ||   | ||   
 /____//    \___//   \_____|| |_||  |_||   |_||   
`-----`     `---`     `----`  `-`   `-`    `-`'

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Text this: Slot allocation for a multiple-airport system considering airspace capacity and flying time uncertainty