APA

Lehmann F., Reich M., . (2013). Development of alternative drive concepts for downhole hammers in deep drilling operations - a feasibility study. : .

Chicago

Lehmann F, Reich M, . 2013. Development of alternative drive concepts for downhole hammers in deep drilling operations - a feasibility study. : .

Harvard

Lehmann F., Reich M., . (2013). Development of alternative drive concepts for downhole hammers in deep drilling operations - a feasibility study. : .

MLA

Lehmann F, Reich M, . Development of alternative drive concepts for downhole hammers in deep drilling operations - a feasibility study. : . 2013.