The film is based on a short story by Alexander Borschagovsky Three Poplars on Shabolovka, published in August 1966 in the Ogonyok magazine.
ຮູບເງົາແມ່ນອີງໃສ່ເລື່ອງສັ້ນໂດຍ Alexander Borschagovsky ສາມ Poplars ໃນ Shabolovka, ຈັດພີມມາໃນເດືອນສິງຫາປີ 1966 ໃນວາລະສານ Ogonyok.