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Author/s: R. Chirulli
Title: New Generation Friction Welded Drill Pipe
Journal and editor: No-Dig International Vol.8, no. 7 - Mining Journal Ltd.
Place: London - U.K.
Date: July 1997
reference number: 003

Author/s: R. Chirulli
Title: Drill Pipe Advances
Journal and editor: No-Dig International Vol.9, no. 2 - Mining Journal Ltd.
Place: London - U.K.
Date: February 1998
reference number: 007

Author/s: R. Chirulli
Title: The role of trenchless technology information dispersion
Journal and editor: No-Dig International Vol.10, no. 2 - Mining Journal Ltd.
Place:  London - U.K.
Date: February 1999
reference number: 015

Author/s: R. Chirulli
Title: Third Generation HDD Drill Pipes
Journal and editor:  No-Dig International - Mining Journal Ltd.
Place:  London - U.K.
Date: April 2000
reference number: 027

Author/s: R. Chirulli
Title: Dry Directional Drilling - A new challenge
Journal and editor:  No-Dig International - Mining Journal Ltd.
Place: London - U.K.
Date: July 2000
reference number: 029

Author/s: R. Chirulli
Title: New generation radar systems
Journal and editor: Trenchless Technology International  - Trenchless Technology Inc.
Place: Peninsula, Ohio - USA
Date: February 2000
reference number: 030

Author/s: R. Chirulli
Title: SE introduces Dry Directional Drilling to North American Market
Journal and editor: Underground Construction - Oildom Publishing Co.
Place: Texas, USA
Date: January 2001
reference number: 032

Author/s: R. Chirulli
Title: Directional Drilling to create networks
Journal and editor: Servizi a Rete -  n.2  - Casa Editrice TECNEDIT
Place: Milano, Italy
Date: March-03
reference number: 036