Doctor Shirshov has authored/co-authored more than 40 scientific articles, he owns one patent for invention and two monographs. He has participated in more than 10 international clinical studies, operating as the principal investigator in some of them.

Focal operational techniques:

• Laparoscopic surgery: nephrectomy, kidney resection, plastic operations for hydronephrosis, kidney cysts removal, ureterolithotomy, adhesiolysis
• Endoscopic surgery: retrograde calyceal pyelolithomy, percutaneous and mini percutaneous nephrolithotomy, including nephrolithotomy for coral kidney stones (coral calculi), contact endoscopic ureterolithotripsy and cystolithotripsy (laser and ultrasonic), endoscopic treatment of ureteral strictures, transurethral resection of the prostate and bladder (monopolar and bipolar), percutaneous nephrostomy, ureteral stenting, Memokath stent insertion, and other
• All surgical interventions on male genital organs (circumcision, surgery on testicular membranes dropsy during varicocele)
• Surgery for stress urinary incontinence in women (TVT installation)
• All open surgical interventions on organs of the genitourinary system, including radical nephrectomy, kidney resection, plastic and reconstructive surgery: laparoscopic plastic surgery of the ureteropelvic junction, ureterocystoneostomy (including Boari bladder flap surgery), radical prostatectomy, transvesical adenomectomy
• Remote nephro-uretero-lithotripsy
• Surgical treatment of urolithiasis of any complexity; expert-quality ultrasound of organs of the urinary system