by (United Kingdom)Г.Лорин;Tran. by (USSR)Р.Л.Смелянский; (USSR)С.Н.Черник by (United Kingdom)К.Грегори;Tran. by (USSR)А.Ю.Ретеюм; (USSR)А.Х.Трёшнико by (United Kingdom)Т.Спрингер;Tran. by (USSR)В.Л.Попова;by (USSR)В.М.Колыто by (United Kingdom)Ж.Лере;Tran. by (USSR)Н.Ф.Ибрагимова;by (USSR)Э.Пинни; by (United Kingdom)Д.Бриллинджер;Tran. by (USSR)А.В.Булинский;by (USSR)И.И.