1. Danilov, B.B., “Ways of Improvement of the Technologies and Equipment for Trenchless Communications Laying,” Journal of Mining Science, 2007, vol. 43, no. 2, pp. 171–176.
2. Rybakov, A.P., Osnovy bestransheinykh tekhnologii (Fundamentals of Trenchless Technologies), Moscow: Press Byuro, 2005, issue 1.
3. Danilov, B.B. and Smolyanitsky, B.N., “Evaluation of Relative Density of Hole Walls Made by an Integrated Process in Soil,” Izv. vuzov, Stroit., 2004, no. 1.
4. Danilov, B.B. and Smolyanitsky, B.N., RF Patent 2344241, Byull. Izobret., 2009, no. 2.
5. Danilov, B.B. and Smolyanitsky, B.N., “Downhole Exploration Air Hammers with Central Slurry Transporting Channel,” Gorn. Mash. Avtomatik., 2002, no. 5.